Player Directory
Tohoku Rakuten Golden Eagles
古賀 康誠
Kosei Koga
61
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ERA
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strike out rate
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BB rate
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*FY2026
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position
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birthday
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age
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height
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body weight
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Pitching and batting
left-handed pitcher / left-handed hitter
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Blood type
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Draft Year
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Biography
下関国際高～23年楽天D育成②
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Titles won
article
【ファーム】東北楽天が接戦制す 渡邊佳明が先制打＆古賀康誠は8回途中1失点
Pacific League Insight
2026.4.10(金) 15:40
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【みやざきPL】16安打11得点の犬鷲快勝 古賀康誠は7回6安打2失点（自責点1）
Pacific League Insight
2025.10.19(日) 16:01
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【ファーム】古賀康誠が8回途中無失点 東北楽天が連敗を止める
Pacific League Insight
2025.9.11(木) 15:18
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【ファーム】古賀康誠が8.2回6安打2失点の好投！ 東北楽天が勝利
Pacific League Insight
2025.8.9(土) 16:03
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【ファーム】初回に5得点の東北楽天が勝利 先発・古賀康誠は6回1失点
Pacific League Insight
2024.9.28(土) 15:45
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【ファーム】古賀康誠が5回無失点で公式戦初勝利！ 東北楽天が接戦を制す
Pacific League Insight
2024.7.15(月) 16:46
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【ファーム】古賀康誠が7回1安打7奪三振無失点の快投も、延長戦の末に引き分けで終了
Pacific League Insight
2024.5.30(木) 16:50
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What were the rookie performances this year...? Highlights from "Rakuten Eagles Fan Appreciation Day 2023"
Pacific League Insight
2023.11.24(金) 17:00
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東北楽天が永田颯太郎ら育成4選手と契約更改
Pacific League Insight
2023.11.6(月) 23:27
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Tohoku Rakuten Eagles held a press conference to announce their new players for the 2023 season. Draft pick #1, Kosei Shoji, "I want to win the Sawamura Award someday."
Pacific League Insight
2022.12.13(火) 07:01
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![After competing with Chiba Lotte Marines they acquired the negotiation rights for Kosei Shoji. 2022 Draft Selection List [Tohoku Rakuten]](https://media.insight.pacificleague.com/EGeYrcEpo2zxk0w3kCESUcCxCFLoGxRcLLfLSK01.jpeg)
After competing with Chiba Lotte Marines they acquired the negotiation rights for Kosei Shoji. 2022 Draft Selection List [Tohoku Rakuten]
Pacific League Insight
2022.10.20(木) 20:32
