Takashi Uchiyama, the former WBA super featherweight champion, announced his retirement on Saturday, wrapping up his illustrious professional career.

Uchiyama, who posted a 24-2-1 record, closed his fighting career with back-to-back losses to Panama’s Jezreel Corrales, which ended up being his only professional defeats, in Tokyo last year. Corrales still remains as the world champion.

“I began thinking of retiring around the end of April,” Uchiyama, 37, said at a news conference that was held in a TV Tokyo studio on Saturday evening. “The biggest reason was that I didn’t have as much motivation as I previously had and that I was hampered by injuries and I couldn’t dispel my doubt that I could be a better fighter than before. That’s why I decided to retire.”

The hard puncher had surgeries on his right fist in 2011 and left elbow in 2015. He added that he would have needed surgery on the elbow in order to continue fighting.

Uchiyama said that he “nearly came to the decision” to retire in June, but wasn’t able to abandon the possibility that his motivation would come back while he was watching other boxers’ fights.

“But it didn’t happen,” said Uchiyama, who was born in Nagasaki Prefecture and grew up in Kasukabe, Saitama Prefecture.

It appeared that Uchiyama had a good chance to break former WBA light flyweight champ Yoko Gushiken’s Japanese record for consecutive world title defenses (13). But Uchiyama was stunned by Corrales, and that ended his streak at 11.

Nevertheless, Uchiyama has no regrets. He said that when he began boxing in high school, there was no way he’d eventually be a world champion, and he certainly didn’t think he would retain his crown as long as he did.

“I feel I’ve achieved more than I could have imagined,” said Uchiyama, who snatched the WBA super featherweight title from Mexico’s Juan Carlos Salgado in January 2010 at age 30.

Uchiyama is not alone, as former super featherweight champ Takashi Miura has also made a decision to walk away from boxing

The 33-year-old announced his retirement in a Twitter post late Friday night.

“After I pondered (the decision), I decided to retire. I don’t have regrets. As I was able to achieve my boyhood dream and get in the ring in America, which I had never imagined I would, I had the best possible boxing career. Thank you,” the Akita Prefecture native, who had a career 31-4-2 record (24 KOs), wrote.

Miura, who lost his WBC super featherweight title to Francisco Vargas in November 2015, attempted to regain the belt against champion Miguel Berchelt at the Forum in Inglewood, California, on July 15, but lost in a unanimous decision.

The southpaw boxer, who was dubbed “Bomber Left” for his powerful signature blow, tweeted after the Berchelt bout that he thinks he took the “first complete loss” in his career.

Miura, a Teiken Gym fighter, challenged Uchiyama for the WBC super featherweight title in 2011, but lost by TKO.

In April 2013, Miura captured the WBC super featherweight belt against champion Gamaliel Diaz and defended it four times.