Hamaguchi, Haruhiro 濵口 遥大 (はまぐち・はるひろ)
Yokohama Bay Stars | #26 | P
Born: 03/15/1995 (age 25)
Height: 173cm
Weight: 80kg
Bats: L
Throws: L
Blood Type: B
Hometown: Saga
Draft: 2016, 1st Round
History: 三養基高-神奈川大
Roster Changes: added 04/01/2017

[3/2/2018] Haruhiro Hamaguchi scratched from Samurai Japan roster

Haruhiro Hamaguchi was scratched from the Samurai Japan roster on March 2 because of discomfort in his left shoulder. Samurai Japan manager Atsunori Inaba later told reporters he made the call because he did not want to risk Hamaguchi’s future by keeping him on the roster.

Source: Sports Hochi 3/2/2018, Nikkan Sports 3/2/2018, Nikkan Sports 3/2/2018, Daily Sports 3/2/2018

[UPDATE 3/17 @ 2:19pm]

Hamaguchi is not expected to make the opening day starting rotation because his left shoulder is still not fully healed.

Source: Sponichi 3/17/2018, Nikkan Sports 3/17/2018


[2/12/2018] Yokohama Bay Stars: Imanaga, Ishida, Hamaguchi each pitch three innings

Shota Imanaga and Kenta Ishida started today’s intra-squad game for the Yokohama Bay Stars.

Imanaga pitched three innings, threw forty-nine pitches, gave up two runs on six hits, and topped out at 144km/h. He surrendered two home runs to Neftali Soto (both on fastballs): a two-out solo shot in the first inning and a two-out two-run blast in the third inning.

Ishida allowed two runs on two hits over three innings of work and forty-three pitches. He gave up lead-off home runs to Masayuki Kuwahara in the first and Hiroki Minei in the third.

Haruhiro Hamaguchi made an appearance in relief and tossed three shutout innings. He gave up two hits and walked three.

Imanaga, Ishida, and Hamaguchi are all in the running for this year’s opening day start.

Source: Daily Sports 2/12/2018, Daily Sports 2/12/2018, Nikkan Sports 2/12/2018, Nikkan Sports 2/12/2018, Nikkan Sports 2/12/2018, Sponichi 2/12/2018, Sports Hochi 2/12/2018


Haruhiro Hamaguchi: Did You Know


Hamaguchi is from the town of Kiyama in Saga Prefecture. The town is planning to present Hamaguchi with their Citizen Honor Award. He will be the third person to receive the award.

Source: Nikkan Sports 12/3/2017, Kiyama 11/28/2017


October 4, 2017 vs Chunichi at Yokohama Stadium – Hamaguchi notched his tenth victory of the year and became the sixth Yokohama rookie pitcher to reach double-digits in wins, first since Takeo Kawamura in 1997; and the first Yokohama left-handed rookie to reach double-digits in wins since Takashi Suzuki in 1958.

Source: Daily Sports 10/4/2017, Nikkan Sports 10/5/2017, Daily Sports 10/5/2017

October 19, 2017 vs Hiroshima at Mazda Stadium – Hamaguchi recorded the win and became the ninth rookie (accomplished eleven times) in Playoff/Climax Series history to notch a win. He is the first rookie in Yokohama Bay Stars history to record a post-season victory.

Hamaguchi recorded two wild pitches in the game (first and second inning) and became the fifth player (accomplished five times) to throw two wild pitches in one Player/Climax Series game. He joined Kenichi Nakata (2007, Final Stage, Game 3) as the only players to record two wild pitches in one game and get the win.

Source: Sponichi 10/20/2017

November 1, 2017 vs Softbank at Yokohama Stadium – Hamaguchi had a no-hitter until he gave up a one-out double to Shinya Tsuruoka in the 8th inning. He picked up the win and became the sixteenth rookie in NPB history to record a Nippon Series victory, first since Tomoyuki Sugano in 2013 and first in Yokohama Bay Stars history. He also became the fourth pitcher (rookie and otherwise) to carry a no-hitter through at least 7.1 innings of work. The other three: Daisuke Yamai (8.0 in 2007), Minoru Murayama (7.1 innings in 1962), and Shinji Sasaoka (7.1 innings in 1991).

Source: Sponichi 11/2/2017


[7/13/2017] MyNavi All-Star Game 2017: Roster Change

The NPB announced today that Haruhiro Hamaguchi (Yokohama) stepped down from the Central League All-Star roster because of a left shoulder injury. His replacement will be Shoichi Ino (Yokohama).

The Yokohama Bay Stars will not be allowed to add Hamaguchi to their active roster for ten games after the All-Star break according to Section 86 of the Baseball Agreement.

Source: NPB 7/13/2017

See also:


[7/12/2017] Haruhiro Hamaguchi’s night cut short by shoulder discomfort

Haruhiro Hamaguchi left tonight’s game against the Hiroshima Carp at Mazda Stadium after three innings and forty-eight pitches because of discomfort in his left shoulder. Hamaguchi will be taken off the active roster and will be examined by a doctor. He will also withdraw from the All-Star series.

Source: Daily Sports 7/12/2017, Nikkan Sports 7/12/2017, Sanspo 7/12/2017

[UPDATE 7/17 @ 5:03pm]

Hamaguchi worked out at the Ni-gun facilities in Yokosuke on July 16. He has been shut down from throwing to rest his left shoulder.

Source: Nikkan Sports 7/16/2017, Sponichi 7/17/2017

[UPDATE 8/8 @ 5:23pm]

Hamaguchi pitched in a practice game against JX-ENEOS on July 5. He gave up a run on two hits over six innings, threw ninety-nine pitches, struck out five, and topped out at 147km/h. He could be ready make his next start at Ichi-gun on July 13 against Hanshin at Yokohama.

Source: Sports Hochi 8/8/2017