Weightclass:  Welterweight
Location:  Chiba, Japan
Record:   6 - 3
DateVenueRecordOpponentOpp RecordOutcomeMethodRoundsCommentsReport
27/02/2036Sapporo Fukunaga, Sapporo, Japan5 - 3 Michi Tsutsumi6 - 9(1) - 3 W UD 10Scorecards: 97-93, 97-93, 97-93. Kobayashi came in overweight. View
24/08/2032Shinji Sugimoto Gym, Nagoya, Japan5 - 2 Hikaru Kida16 - 6(4) L UD 10Scorecards: 90-100, 90-100, 90-100. Kobayashi came in overweight. View
22/08/2030Toyota Aoki, Toyota, Japan4 - 2 Takeshi Osaki5 - 13(1) - 2 W UD 10Scorecards: 96-94, 96-94, 96-94. View
23/07/2028Shinji Sugimoto Gym, Nagoya, Japan3 - 2 Ryo Konno0 - 2 - 1 W UD 8Scorecards: 80-72, 80-72, 80-72. View
08/12/2026Nagoya Okino, Nagoya, Japan2 - 2 Nao Kumagai0 - 1 - 1 W UD 6Scorecards: 60-54, 60-54, 60-54. View
06/07/2025Ace Boxing Gym, Saitama, Japan1 - 2 Takeshi Matsuzaki0 - 0 W UD 4Scorecards: 40-36, 40-36, 40-36. View
25/10/2024Shinji Sugimoto Gym, Nagoya, Japan1 - 1 Taro Aoyama0 - 0 L UD 4Scorecards: 36-40, 36-40, 36-40. View
22/09/2023Yokohama Kase, Yokohama, Japan0 - 1 Taro Taniguchi0 - 0 W UD 4Scorecards: 39-37, 39-37, 39-37. View
23/01/2023Dai Tano Gym, Tokyo, Japan0 - 0 Akira Asa1 - 0 L UD 4Scorecards: 36-40, 36-40, 36-40. View