Kousuke Sakaguchi

Kousuke Sakaguchi (阪口 皓亮)

• Bats Left, Throws Right
• Height 6' 1", Weight 170 lb.

• High School Hokkai High School

• Born August 15, 1999 in Kakogawa, Hyogo Japan

BR register page

Biographical Information

Kousuke Sakaguchi has played in Nippon Pro Baseball.

Sakaguchi was drafted by the Yokohama BayStars in the 3rd round of the 2017 NPB draft. He was 3-9 with a 6.15 ERA in the NPB Farm Leagues in 2018, and he went 4-6 with a 4.67 ERA there in 2019. Sakaguchi also started 3 games with a 5.87 ERA for the big club, and he went 1-1 with a 8.02 ERA for the Canberra Cavalry in the 2019-2020 ABL. Sakaguchi then had a 4-1 record with a 2.07 ERA in the minors in 2020, but his ERA was 7.50 in 3 starts for the top team. He was 2-3 with a 4.11 ERA for the big club in 2021, but he only pitched one game there in 2022. Sakaguchi was 6-7 with a 2.90 ERA in the minors, and he led the Eastern League with 91 strikeouts.

The Hyogo native had a 6.00 ERA in 23 games in the minors in 2023 for the BayStars, and he was traded to the Yakult Swallows for Naomichi Nishiura. Sakaguchi was 0-2 with a 3.31 ERA in the top team in the rest of the season, and he was 9-3 with a 2.24 ERA in the minors in 2024. He led the Eastern League in ERA, wins and winning percentage. Sakaguchi pitched 18 games with a 3.70 ERA for the big club in 2025.

Sakaguchi's repertoire includes a fastball (peak 98.2 mph), curveball, cutter and forkball.