On March 19, 2022, Masamichi Yabuki and Kenshiro Teraji met again in an immediate rematch.
Yabuki came in to the fight on a 6-fight win streak with a 75% KO rate, and was fighting after a gap of 5 months and 25 days. Teraji was on a -1-fight win streak with a 52% KO rate, and fighting after a layoff of 5 months and 25 days.
Kenshiro Teraji made easy work of Masamichi Yabuki in the rematch, stopping the champion via KO in the 3rd. Teraji improves his record to 19-1 (11 KOs), while Yabuki adds a loss to his record at 13-4.
On September 29, 2018, a 26-year-old Masamichi Yabuki (7-2, 7 KOs) and a 30-year-old Cuban boxer Daniel Matellon (5-0-2, 3 KOs) met in the ring.
Yabuki came in to the fight on a 1-fight win streak with a 77% KO rate, and was fighting after a gap of 3 months and 12 days. Matellon was on a 3-fight win streak with a 42% KO rate, and fighting after a layoff of 6 months and 19 days.
Daniel Matellon defeated Masamichi Yabuki via split decision in the 8-round fight. Matellon improves his record to 6-0-2, while Yabuki adds a loss to his record at 7-3.
On April 8, 2018, a 25-year-old Masamichi Yabuki (6-1, 6 KOs) and a 22-year-old fellow Japanese boxer Seigo Yuri Akui (11-1-1, 7 KOs) met in the ring.
Yabuki came in to the fight on a 3-fight win streak with a 85% KO rate, and was fighting after a gap of 4 months and 13 days. Akui was on a -1-fight win streak with a 53% KO rate, and fighting after a layoff of 7 months and 16 days.
Seigo Yuri Akui stopped Masamichi Yabuki via TKO in the 1st round. Akui improves his record to 12-1-1 (8 KOs), while Yabuki adds a loss to his record at 6-2.
On December 23, 2016, a 24-year-old Masamichi Yabuki (3-0, 3 KOs) and a 18-year-old fellow Japanese boxer Junto Nakatani (8-0, 7 KOs) met in the ring.
Yabuki came in to the fight on a 3-fight win streak with a 100% KO rate, and was fighting after a gap of 1 month and 17 days. Nakatani was on a 8-fight win streak with a 87% KO rate, and fighting after a layoff of 1 month and 10 days.
Junto Nakatani defeated Masamichi Yabuki via unanimous decision in the 4-round fight. Nakatani improves his record to 9-0, while Yabuki adds a loss to his record at 3-1.