This is a brief summary of Yoshinori Sato’s injury history, according to Nikkan Sports.
- September 9, 2011 – He developed tightness in his right shoulder and was taken off the active roster.
- February 27, 2012 – He pitched two innings in a practice game against KIA and gave up one hit, struck out three, and topped out at 151km/h.
- April 13, 2012 – He started a practice game against Mitsubishi Juko and gave up three runs on eight hits over eight innings of work. He topped out at 146km/h.
- April 21, 2012 – He missed a Ni-gun start against Yomiuri because of discomfort in his right shoulder.
- May 24, 2012 – He was diagnosed with an avulsion fracture in his left tibial tuberosity.
- April 11, 2013 – He had surgery to clean out his right labrum and rotator cuff.
- June 5, 2014 – He threw forty-one pitches during batting practice. He faced hitters for the first time in 783 days.
- June 14, 2014 – He started a game against the Futures. He did not allow a run or hit in an inning of work and topped out at 155km/h. It was his first game in 792 days.
- August 6, 2014 – He started a Ni-gun game against Yomiuri and gave up three runs on three hits over five innings of work. He complained of discomfort in his right shoulder after the start.
- November 16, 2016 – He pitched in a game against Matsuyama Phoenix and did not allow a run or a hit over two innings of work. He topped out at 148km/h.
- February 22, 2015 – He pitched in an exhibition game against Nippon Ham. He tossed two shutout innings and allowed one hit. He topped out at 151km/h.
- March 11, 2015 – He pitched in an exhibition game against Orix and allowed one hit over three shutout innings. He topped out at 150km/h.
- November 12, 2015 – He signed an Ikusei contract.
- July 5, 2016 – He returned to the seventy-man roster.
Source: Nikkan Sports 7/10/2016