Although a successful fighter in Japan he is best known for his 2014 loss to Guillermo Rigondeaux. The talented Cuban went over to Japan face the then unknown Japanese fighter, who went on to score two knockdowns of Rigondeaux, before suffering an 11th round TKO with his face a swollen and broken mess.
Following that loss western fans ended up following Amagasa's career, though sadly he would go 5-2 (2) following the Rigondeaux fight, losing to Josh Warrington in the UK in 2016 before suffering a decision loss to Richard Pumicpic last year. After that loss to Pumicpic Amagasa revealed he was going to retirement, but his ceremony was held off until today.
Amagasa thanked the fans for their support, throughout his career, and stated that he will do his best outside of boxing. For those unaware he has returned to Gunma where he's now working for an agricultural company
Before the ceremony was over he was joined in the ring by former world champion Akifumi Shimoda [下田 昭文] and stated that boxing is the best.
(Image courtesy of boxmob.jp)