From 2016 season to 2019 season, he recorded with a 29 Games pitched, a 4–7 Win–loss record, a 4.29 ERA, a 96 strikeouts in 121 2/3 innings.
Matsumoto recorded the Hold for the first time in the match against the Hokkaido Nippon-Ham Fighters on August 29.[4] In 2020 season, he recorded with a 25 Games pitched, a 0–1 Win–loss record, a 3.49 ERA, a 6 Holds, a 27 strikeouts in 28.1 innings. In the 2020 Japan Series against the Yomiuri Giants, Matsumoto pitched after starter Tsuyoshi Wada in Game 4, became the first Winning pitcher in the Japan Series, and contributed to the team's fourth consecutive Japan Series champion.[5] On December 16, Matsumoto underwent surgery for a Spinal disc herniation.[6]
In 2021 season, he pitched in a career-high 33 games, going 3-3 with a 3.79 ERA, four holds, and 59 strikeouts in 73.2 innings.[7]
In 2022 season, Matsumoto was undergoing acupuncture treatment on March 23 when the treatment needle broke and the procedure caused him to miss the opening game.[8] However, he won as a relief pitcher on May 25, and from then on he contributed to the team as a setup man who pitched in the 7th inning. In 44 appearances, he went 5-1 with a 2.66 ERA, 15 holds, and 60 strikeouts in 50.2 innings pitched.[9][10]
In 2023 season, Matsumoto was used as a setup man midway through the season when Liván Moinelo left the team to undergo surgery on his left elbow.[11] He continued to contribute to the team as a setup man and finished the regular season with a career-high 53 games pitched, a 2-2 Win–loss record, a 2.68 ERA, a 25 holds, and a 60 strikeouts in 47 innings.
