On August 30, 2023, a 27-year-old Seiya Tsutsumi (8-0-2, 7 KOs) and a 25-year-old fellow Japanese boxer Riku Masuda (3-0, 3 KOs) met in the ring in a bantamweight bout.
Tsutsumi came in to the fight on a 3-fight win streak with a 70% KO rate, and was fighting after a gap of 5 months and 10 days. Masuda was on a 3-fight win streak with a 100% KO rate, and fighting after a layoff of 3 months and 10 days.
Seiya Tsutsumi defeated Riku Masuda via unanimous decision in the 10-round bantamweight fight. Tsutsumi improves his record to 9-0-2, while Masuda adds a loss to his record at 3-1.
On April 14, 2019, a 23-year-old Seiya Tsutsumi (4-0, 3 KOs) and Ryan Rey Ponteras met in the ring.
Tsutsumi came in to the fight on a 4-fight win streak with a 75% KO rate, and was fighting after a gap of 6 months.
Seiya Tsutsumi stopped Ryan Rey Ponteras via TKO in the 1st round. Tsutsumi improves his record to 5-0 (4 KOs)
On June 17, 2018, a 22-year-old Seiya Tsutsumi (1-0, 1 KO) and Yutthana Narkprasert met in the ring.
Tsutsumi came in to the fight on a 1-fight win streak with a 100% KO rate, and was fighting after a gap of 2 months and 21 days.
Seiya Tsutsumi stopped Yutthana Narkprasert via KO in the 1st round. Tsutsumi improves his record to 2-0 (2 KOs)
On March 20, 2023, a 27-year-old Seiya Tsutsumi (7-0-2, 6 KOs) and Jin Minamide met in the ring in a bantamweight bout.
Tsutsumi came in to the fight on a 2-fight win streak with a 66% KO rate, and was fighting after a gap of 5 months.
Seiya Tsutsumi stopped Jin Minamide via TKO in the 7th round. Tsutsumi improves his record to 8-0-2 (7 KOs)
On June 23, 2022, a 26-year-old Seiya Tsutsumi (5-0-2, 4 KOs) and Kyosuke Sawada met in the ring in a bantamweight bout.
Tsutsumi came in to the fight after a draw in his last fight with a 57% KO rate, and was fighting after a gap of 1 year, 7 months, and 28 days.
Seiya Tsutsumi stopped Kyosuke Sawada via TKO in the 8th round. Tsutsumi improves his record to 6-0-2 (5 KOs)
On October 20, 2022, a 26-year-old Seiya Tsutsumi (6-0-2, 5 KOs) and Kenshin Oshima met in the ring in a bantamweight bout.
Tsutsumi came in to the fight on a 1-fight win streak with a 62% KO rate, and was fighting after a gap of 3 months and 27 days.
Seiya Tsutsumi stopped Kenshin Oshima via TKO in the 9th round. Tsutsumi improves his record to 7-0-2 (6 KOs)
On July 7, 2024, a 28-year-old Seiya Tsutsumi (10-0-2, 7 KOs) and Weerawat Noolae met in the ring.
Tsutsumi came in to the fight on a 5-fight win streak with a 58% KO rate, and was fighting after a gap of 6 months and 11 days.
Seiya Tsutsumi stopped Weerawat Noolae via TKO in the 4th round. Tsutsumi improves his record to 11-0-2 (8 KOs)
On September 4, 2018, a 22-year-old Seiya Tsutsumi (2-0, 2 KOs) and Junpei Inamoto met in the ring.
Tsutsumi came in to the fight on a 2-fight win streak with a 100% KO rate, and was fighting after a gap of 2 months and 18 days.
Seiya Tsutsumi stopped Junpei Inamoto via TKO in the 3rd round. Tsutsumi improves his record to 3-0 (3 KOs)
On December 26, 2023, a 28-year-old Seiya Tsutsumi (9-0-2, 7 KOs) and Kazuki Anaguchi met in the ring in a bantamweight bout.
Tsutsumi came in to the fight on a 4-fight win streak with a 63% KO rate, and was fighting after a gap of 3 months and 26 days.
Seiya Tsutsumi defeated Kazuki Anaguchi via unanimous decision in the 10-round bantamweight fight. Tsutsumi improves his record to 10-0-2
On October 26, 2020, a 24-year-old Seiya Tsutsumi (5-0-1, 4 KOs) and a 25-year-old fellow Japanese boxer Daigo Higa (16-1, 16 KOs) met in the ring.
Tsutsumi came in to the fight after a draw in his last fight with a 66% KO rate, and was fighting after a gap of 8 months and 28 days. Higa was on a 1-fight win streak with a 94% KO rate, and fighting after a layoff of 8 months and 13 days.
The fight ended in a majority decision draw and both the fighters added a draw to their respective records — Tsutsumi is now 5-0-2 and Higa, 16-1-1.