Japan’s Hozumi Hasegawa, whose distinguished 17-year career included winning world titles in three weight divisions — bantamweight, junior featherweight and featherweight — has announced his retirement from boxing.

Hasegawa, a 35-year-old southpaw, forced Mexico’s Hugo Ruiz to retire on his stool after the ninth round in Osaka, Japan, on Sept. 16 to win a junior featherweight world title. He will walk away from the sport off that victory.

“I have nothing to prove more, and it becomes truly hard to have myself motivated to go on after my third coronation,” Hasegawa said in a statement Friday.

Hasegawa (36-5, 16 KOs), who turned pro in 1999, got his first world title shot in 2005 and won a unanimous decision to dethrone bantamweight titleholder Veeraphol Sahaprom.

He held the title for nearly five years and made 10 successful defenses, including beating Sahaprom by ninth-round knockout in a 2006 rematch and victories over other quality contenders: Genaro Garcia, Simpiwe Vetyeka and Vusi Malinga.

After Mexico’s Fernando Montiel traveled to Tokyo and knocked him out in the fourth round to take the belt in 2010, Hasegawa jumped up two weight classes and won a unanimous decision against Mexico’s Juan Carlos Burgos to win a vacant featherweight world title.

For his first defense, Hasegawa faced Mexico’s Jhonny Gonzalez, who knocked him down and stopped him in the fourth round.

Hasegawa won his next four bouts and got the opportunity to challenge then-junior featherweight titlist Kiko Martinez, so he dropped down in weight but was stopped in the seventh round in April 2014. Hasegawa rebounded to win his next three fights, including the mild upset over Ruiz to claim his final world title.