• Central League
  • Hanshin Tigers
  • Yokohama DeNA BayStars
  • Yomiuri Giants
  • Chunichi Dragons
  • Hiroshima Toyo Carp
  • Tokyo Yakult Swallows
  • Pacific League
  • Fukuoka Softbank Hawks
  • Hokkaido Nippon-Ham Fighters
  • ORIX Buffaloes
  • Tohoku Rakuten Golden Eagles
  • Saitama Seibu Lions
  • Chiba Lotte Marines
  • Japan Baseball

Players

  • 17
  • Tohoku Rakuten Golden Eagles
  • Koja, Tatsuki
Position Pitcher
Bats / Throws Left / Left
Height / Weight 182cm/ 75kg
Born August 18, 2001
Year Team G W L SV HLD HP CG SHO PCT BF IP H HR BB HB SO WP BK R ER ERA
2024 Rakuten 15 5 8 0 0 0 0 0 .385 347
83 .1
70 10 31 7 58 0 0 42 40 4.32
2025 Rakuten 19 7 7 0 0 1 1 1 .500 459
107
118 8 27 3 76 1 0 48 44 3.70
2026 Rakuten 10 1 5 0 0 0 1 0 .167 233
56
52 8 14 2 46 0 0 25 25 4.02
Totals 44 13 20 0 0 1 2 1 .394 1039
246 .1
240 26 72 12 180 1 0 115 109 3.98
Year Team G PA AB R H 2B 3B HR TB RBI SB CS SH SF BB HP SO GDP AVG SLG OBP
2024 Rakuten 15 3 1 1 0 0 0 0 0 0 0 0 2 0 0 0 1 0 .000 .000 .000
2025 Rakuten 19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .000 .000 .000
2026 Rakuten 10 3 3 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 .000 .000 .000
Totals 44 6 4 1 0 0 0 0 0 0 0 0 2 0 0 0 3 0 .000 .000 .000