Yamaguchi, Shun 山口 俊 (やまぐち・しゅん)
Yomiuri Giants | #42 | P
Born: 07/10/1987 (age 32)
Height: 187cm
Weight: 97kg
Bats: R
Throws: R
Blood Type: O
Hometown: Oita
Draft: 2005, High School 1st Round
History: 柳ヶ浦高(甲)-横浜-DeNA
Roster Changes: added 04/08/2016, removed 07/10/2016, added 08/02/2016, removed 09/12/2016

[12/6/2018] Shun Yamaguchi agrees to two-year extension

Shun Yamaguchi agreed to a new two-year contract extension (he was in the final year of a two-year deal this season). According to media reports, his salary will be an estimated 230 million yen next year (no change over this season). He was also assigned a new uniform number: from 42 to 11.

Source: Yomiuri 12/6/2018, Sanspo 12/6/2018, Daily Sports 12/6/2018, Sponichi 12/6/2018


[7/28/2018] Shun Yamaguchi tosses a no hitter

Shun Yamaguchi got the start against the Chunichi Dragons on July 27 and tossed a no hitter. He faced twenty-eight hitters, walked one, struck out five, and threw 103 pitches.

Yamaguchi became…

The Chunichi Dragons were no hit for the first time since May 8, 1999. They were no hit by the Giants for the first time since May 22, 1943.

Source: Nikkan Sports 7/27/2018, Tokyo Sports 7/27/2018, Sponichi 7/27/2018, Daily Sports 7/27/2018, Sponichi 7/28/2018


[8/18/2017] Shun Yamaguchi: suspended, fined, docked pay

Thirty-year-old Shun Yamaguchi is suspected of causing injury and damaging equipment. The Meguro Police Department formally filed papers with the Public Prosecutors Office on August 18. The Yomiuri Giants and Yamaguchi held a press conference to address the report.

Notes from various reports:

Source: Nikkan Sports 8/18/2017, Nikkan Sports 8/18/2017, Nikkan Sports 8/18/2017, Nikkan Sports 8/18/2017, Daily Sports 8/18/2017, Daily Sports 8/18/2017, Daily Sports 8/18/2017, ZakZak 8/18/2017, Sponichi 8/18/2017, Sponichi 8/18/2017, Sanspo 8/17/2017, Tokyo Sports 8/18/2017, Tokyo Sports 8/18/2017

[UPDATE 8/19 @ 3:12pm]

Yamaguchi visited Tokyo Dome today and offered an apology to coaches and teammates. He is expected to resume practices soon.

Source: Nikkan Sports 8/19/2017

[UPDATE 8/20 @ 5:39pm]

Yamaguchi resumed practices at Giants Stadium today. It was the first time he wore the team uniform in about a month. He also apologized to Ni-gun and San-gun players/coaches/staff before the start of practices.

Source: Sponichi 8/20/2017, Nikkan Sports 8/20/2017, Daily Sports 8/20/2017

[UPDATE 8/24 @ 1:28am]

The Tokyo District Public Prosecutors Office dropped Yamaguchi’s case. The indictment was likely suspended, since the Giants settled with both the hospital and security guard.

Source: Sanspo 8/23/2017

[UPDATE 8/29 @ 12:23am]

The Japan Professional Baseball Players Association announced on August 28 that they filed a grievance with the Giants, the NPB commissioner’s office, and the NPB executive committee. They are requesting the Giants to reconsider their financial punishment for this year because they feel it is too much. They are also concerned that the Giants coerced Yamaguchi into agreeing to contract changes that will result in a significant reduction in wages past this season by threatening to terminate it completely.

The Giants released a statement indicating that they felt their punishment was appropriate.

Source: JPBPA 8/28/2017, Sponichi 8/28/2017, Sponichi 8/28/2017Daily Sports 8/28/2017, Daily Sports 8/28/2017, Tokyo Sports 8/28/2017

[UPDATE 8/29 @ 9:32pm]

Yamaguchi spoke to reporters today after practices at Giants Stadium. He said he was unaware of their plans to file a grievance, though he did have contact with the players association during his voluntary suspension. He also said that it was his own decision was to stay and sign with the Giants and that he just wanted to move on.

The JPBA’s Secretary General Tadahito Mori told reporters after a meeting with the NPB today that their decision to file a grievance was not so much about the individual, as it was about the whole. There were also concerns about it setting a dangerous precedent for the future.

Source: Daily Sports 8/29/2017, Tokyo Sports 8/29/2017, Daily Sports 8/29/2017

[UPDATE 8/30 @ 3:04pm]

The players association was involved in initial talks between Yamaguchi and the Giants. They sat in on three discussions, then were left out of the loop. Based on what discussions they were a part of, the Giants first wanted Yamaguchi to withdraw from the organization on his own. After that, they started talking about shortening their multi-year contract.

Source: Nikkan Sports 8/30/2017, Sanspo 8/30/2017

[UPDATE 9/6 @ 5:08am]

The Giants submitted a response with the NPB executive committee during a meeting on September 4. Their response took up five B5 pages.

The Giants are claiming that their punishment was appropriate, if not a little lenient, based on queries made by fans. With regards to the contract, they claim they did nothing that went against the baseball agreement or other regulations and that Yamaguchi gave his consent. They also claim that since contract renegotiations took place because of player misconduct, there would be no negative repercussions to the free agency system itself.

The Giants also clarified/confirmed that Yamaguchi never approached the players association because he was unsatisfied with the final punishment. 

Source: Sponichi 9/4/2017, Sanspo 9/4/2017, Daily Sports 9/4/2017, Nikkan Sports 9/4/2017Tokyo Sports 9/5/2017

See also:


[7/18/2017] Shun Yamaguchi in trouble after incident on July 11

Shun Yamaguchi was scratched from his start against the Chunichi Dragons at Nagoya Dome tonight because of an incident earlier this month.

According to the Yomiuri Giants, Yamaguchi was drinking with a friend at a restaurant in Tokyo on July 11 (also his birthday).  He got drunk and hurt his right hand. He went to a hospital for treatment, and in the process, may have broken a door and injured a male security guard. The Giants learned about incident today. They have decided to pull him from the rotation for the time being. They are still in the process of determining what exactly happened.

Source: Nikkan Sports 7/18/2017, Daily Sports 7/18/2017, Daily Sports 7/18/2017Sponichi 7/18/2017, Tokyo Sports 7/18/2017

[UPDATE 7/19 @ 4:12am]

Tokyo Sports is reporting that the hospital already filed a damage report with police. Additional details about the incident have also been released.

Meguro police responded to a call on July 11. By the time they arrived, Yamaguchi was already gone. However, there was surveillance camera footage. The security guard reportedly suffered injuries that will take about two weeks to heal. A wooden door was was dented. There was no broken glass.

Police have not yet been contacted by Yamaguchi or the Giants. They were caught off guard when they learned the team made an announcement to the media.

Source: Tokyo Sports 7/18/2017

[UPDATE 7/20 @ 3:23am]

While the last update made it sound like Yamaguchi was the individual that damaged a door and hurt a security guard, neither the police or the Giants have actually named him as the perpetrator. Both the police and the Giants are still investigating what happened.

A little more has been revealed by the media.

From the Giants:

From the police:


Source: Chunichi Sports 7/19/2017, Nikkan Sports 7/19/2017, Daily Sports 7/19/2017, Daily Sports 7/19/2017Sponichi 7/19/2017, Sponichi 7/19/2017Sanspo 7/19/2017

[UPDATE 8/1 @ 12:16am]

ZakZak interviewed a friend that was apparently at Yamaguchi’s birthday gathering. Some notes:

Source: ZakZak 7/31/2017


[6/14/2017] Yamaguchi, Mathieson, Caminero combine for no-hitter

Shun Yamaguchi, Scott Mathieson, and Arquimedes Caminero to throw a no-hitter tonight against the Softbank Hawks at Tokyo Dome. They are just the second trio in NPB history to record a no-hitter. The other trio: Nippon Ham’s Tomoya Yagi, Hisashi Takeda, and Micheal Nakamura accomplished the feat in twelve innings against Softbank at Yahoo Dome on April 15, 2006.

There have been three other no-hitters that involved two pitchers:


[2/11/2017] Shun Yamaguchi out with the flu

The Yomiuri Giants announced today that Shun Yamaguchi was examined at a hospital in Tokyo and diagnosed with influenza A.

Source: Nikkan Sports 2/11/2017

[UPDATE 2/16 @ 11:09pm]

Yamaguchi joined San-gun camp in Miyazaki on February 16.

Source: Nikkan Sports 2/16/2017


[2/4/2017] Yomiuri Giants want Shun Yamaguchi to take things slow

Shun Yamaguchi started spring camp at San-gun because of discomfort in his right shoulder. No issues were discovered in the shoulder during an examination on February 2. He was hoping to join the Ichi-gun team during Okinawa camp, but the Yomiuri Giants are not going to rush him with a set schedule. The Giants believe he will be fine for opening day if he can pitch in one or two exhibition games.

Yamaguchi has played catch three days in a row. He is also up to fifteen meters on throws into a net. He could be ready to toss a bulpen session before the end of the month.

Source: Nikkan Sports 2/4/2017

[UPDATE 3/4 @ 2:26am]

Yamaguchi may not be ready to join the Ichi-gun team until mid-April. His condition is improving, but the last thing the Giants want is for him to re-aggravate the shoulder.

Source: Sanspo 3/3/2017

[UPDATE 4/28 @ 7:43pm]

Yamaguchi tossed batting practice at Giants Stadium earlier today. He faced Ikusei players Kosei Tajima, Shuhei Kato, and Takuya Kawai. He threw fifty-eight pitches, allowed five could-be hits, and topped out at 139km/h. He threw sliders and fastballs at sixty to seventy percent.

Source: Nikkan Sports 4/28/2017

[UPDATE 4/30 @ 7:08pm]

Yamaguchi might be ready to play in his first rehab game some time around May 10. The Giants will probably have him pitch in two to three rehab games before they consider moving him up to Ichi-gun. That could mean some time around the end of Inter-league play.

Source: Nikkan Sports 4/30/2017

[UPDATE 5/5 @ 5:25pm]

Yamaguchi tossed another batting practice again today. He threw sixty-one pitches (all fastballs) and faced Takehiro Donoue and Kazuma Okamoto. He threw thirty-one pitches to Donoue and allowed five could-be hits, including a home run. He threw thirty pitches to Okamoto and allowed eight could-be hits, including three home runs.

Source: Nikkan Sports 5/5/2017

[UPDATE 5/11 @ 5:58pm]

Yamaguchi tossed a bullpen session on May 9 and threw into a net on May 10. He pitched in a batting practice scrimmage today and faced ten hitters. He threw thirty-four pitches at about eighty percent, allowed two could-be hits, and topped out at 144km/h.

Source: Sanspo 5/11/2017Daily Sports 5/11/2017, Sponichi 5/11/2017, Nikkan Sports 5/11/2017

[UPDATE 5/12 @ 6:10pm]

Yamaguchi might be ready to pitch in a Ni-gun rehab game on either May 17 or 18. If he continues to make good progress, he might be able to make the active roster in early-June.

Source: Sponichi 5/12/2017, Sanspo 5/12/2017

[UPDATE 5/17 @ 9:52pm]

Yamaguchi is slated to pitch two innings in a Ni-gun game against Yakult at Giants Stadium on May 18. He threw forty-eight pitches in the bullpen on May 16.

Source: Sponcihi 5/17/2017

[UPDATE 5/18 @ 5:37pm]

Yamaguchi started a Ni-gun game against Yakult at Giants Stadium today. He pitched two shutout innings. He threw thirty-five pitches, allowed one hit, walked two, and topped out at 149km/h twice.

Source: Nikkan Sports 5/18/2017, Nikkan Sports 5/18/2017Sponichi 5/18/2017

[UPDATE 5/24 @ 9:42pm]

Yamaguchi is slated to get another Ni-gun start on May 26 against Rakuten.

Source: Nikkan Sports 5/24/2017

[UPDATE 5/26 @ 2:49pm]

Yamaguchi is expected to pitch five innings or throw about eighty pitches during his rehab start today. He will be extended to seven innings or around 120 pitches for his next rehab start. Assuming no problems, he could make the active roster in time for a start during a Nippon Ham series that begins on June 9.

Source: Nikkan Sports 5/26/2017

[UPDATE 5/27 @ 7:00pm]

Yamaguchi started a game against Ni-gun Rakuten today and tossed five shutout innings. He threw sixty-nine pitches, allowed one hit, walked one, struck out three, and topped out at 150km/h. He did not allow any hits through the first four innings.

Source: Nikkan Sports 5/27/2017

[UPDATE 6/6 @ 7:41pm]

Yamaguchi started a Ni-gun game against Seibu earlier today. He pitched seven innings and gave up a run on three hits (all doubles). He threw 114 pitches, walked one, hit one, struck out five, and topped out at 150km/h. He could make his next start at Ichi-gun.

Source: Nikkan Sports 6/6/2017, Daily Sports 6/6/2017, Tokyo Sports 6/6/2017


[1/29/2017] Shun Yamaguchi reassigned to San-gun spring camp

The Yomiuri Giants announced on January 29 that Shun Yamaguchi will start the year at San-gun spring camp instead of Ni-gun spring camp out of concern for his right shoulder. Yamaguchi had problems with the shoulder last season and has been careful with it during the off-season.

Source: Nikkan Sports 1/29/2017, Sponichi 1/29/2017

[UPDATE 4/21 @ 6:01pm]

Yamaguchi hopes he will be ready to pitch in a rehab game at some point before the end of the month. He has been tossing bullpen sessions without any shoulder problems.

Source: Sanspo 4/21/2017


[12/2/2016] Shun Yamaguchi to sign with the Yomiuri Giants

The Yomiuri Giants announced on December 1 that they received a positive reply from Shun Yamaguchi. General Manager Tatsuyoshi Tsutsumi told reporters Yamaguchi called him and said he wanted to join the team. The Giants are planning to hold a press conference on December 5.

The Yokohama Bay Stars met Yamaguchi one last time on November 29. Yokohama did not did not make any changes to their base offer (reportedly three years and 500 million yen), but were willing to improve other portions of their proposal, like the incentives. The organization made an announcement on the same day that he was going to move on to another team.

The Chunichi Dragons also made a run for Yamaguchi with an offer that was apparently about the same as the Yomiuri Giants.

The Bay Stars are currently thinking about taking a player and money as compensation for losing Yamaguchi to free agency. They either want a player with future potential or a player that can contribute right away.

Source: Yokohama announcement (11/29), Daily Sports 12/2/2016Daily Sports 12/1/2016, Daily Sports 12/1/2016Daily Sports 11/29/2016

[UPDATE 12/3 @ 11:56am]

Yamaguchi is slated to get the uniform number 42. He was also offered the numbers 11, 33, and 99, but he selected 42 because it reminds him of the MLB (Jackie Robinson).

Source: Sponichi 12/3/2016

[UPDATE 12/5 @ 10:00pm]

The Giants held a press conference for Yamaguchi on December 5. They also introduced Masahiko Morifuku.

Yamaguchi most likely agreed to a three-year contract worth an estimated 700 million yen.

Source: Yomiuri announcement, Nikkan Sports 12/5/2016

[UPDATE 12/13 @ 5:03pm]

The Bay Stars received the Giants’ list of protected players on December 12.

Source: Tokyo Sports 12/13/2016

[UPDATE 12/13 @ 8:18pm]

Yokohama is looking for either a pitcher or infielder.

Source: Sponichi 12/13/2016

[UPDATE 12/22 @ 10:13pm]

Yokohama General Manager Shigeru Takada told reporters today that they are planning to select a player as part of their compensation package. They will inform the Giants after they finalize their decision during a meeting on January 4.

Yokohama will also be entitled to forty percent of Yamaguchi’s 2016 salary (32 million yen).

Source: Daily Sports 12/22/2016, Daily Sports 12/22/2016

[UPDATE 12/23 @ 9:35pm]

The Bay Stars might have their eye on a pitcher, since they already have enough infielders.

Source: Sponichi 12/23/2016, Nikkan Sports 12/23/2016

See also:


[2016 Free Agency] Shun Yamaguchi Rumors

Date Team Update
@ 01:22
Chunichi The Dragons may have offered Yamaguchi a five-year contract worth over one billion yen. Source: Nikkan Sports 11/30/2016
@ 22:25
Chunichi The Dragons may have contacted Yamaguchi. A team official refused to name names, but said more will become known before the end of the month. Source: Tokyo Sports 11/26/2016
@ 22:11
Yamaguchi is hoping to make a decision about where he is going to play next year before the end of the month. Source: Nikkan Sports 11/26/2016
@ 15:13
Yomiuri The Giants have been in touch with Yamaguchi since their meeting. They are hoping he will have a decision before the end of the month. Source: Sponichi 11/16/2016
@ 04:07
Chunichi The Dragons have an interest in Yamaguchi. Chunichi Pitching Coach Yui Tomori was a Yokohama pitching coach between 2012 and 2013. It is unclear if that might give the Dragons some sort of an edge. Source: Tokyo Sports 11/12/2016
@ 15:55
Yomiuri According to a report by ZakZak, there may be some concerns about Yamaguchi’s connection to Noboru Takachi. The former actor was arrested on usage and possession of stimulant drugs earlier this year. The Giants are trying to distance themselves from scandals after a few of their players were caught gambling. Source: ZakZak 11/12/2016
@ 23:43
Yomiuri After his meeting with Giants, Yamaguchi spoke to reporters and said that he grew up watching the Giants. Source: Nikkan Sports 11/11/2016
@ 22:32
Yomiuri Yamaguchi had a chance to speak to Giants’ manager Yoshinobu Takahashi over the phone during his meeting. Source: Daily Sports 11/11/2016
@ 22:07
Yomiuri The Giants met Yamaguchi at a hotel in Tokyo for about forty minutes on November 11. They most likely offered a multi-year contract. Source: Tokyo Sports 11/11/2016
@ 13:43
Yomiuri The Giants are scheduled to meet Yamaguchi at a hotel in Tokyo on November 11. Source: Sponichi 11/11/2016
@ 01:58
Yomiuri The Giants could offer Yamaguchi a three-year deal worth about 600 million yen. They could also offer the uniform number 11. If they are unable to free the number, 99 could also be a possibility. Source: Sponichi 11/10/2016
@ 17:11
Yomiuri The Giants could offer Yamaguchi the uniform number 11. The number is currently used by Luis Cruz, but the team might not be too concerned about reassigning it based on the season he had this year. Source: Tokyo Sports 11/10/2016

Yokohama’s last offer: three years over 500 million yen
2016 Salary: 80 million yen

See also: