Detriot Lions defensive lineman John Penisini announced his retirement Saturday after just two seasons in the NFL.

The former Utah Utes standout, 25, took to social media to share the news. 

Tom Brady (12) of the Tampa Bay Buccaneers embraces John Penisini (91) of the Detroit Lions following a recreation at Ford Field Dec. 26, 2020, in Detroit.  (Nic Antaya/Getty Photographs)

"I have built the decision to retire from soccer," Penisini wrote. 

"I’m certainly going to pass up my teammates and the coaching staff but I’m glad I bought to working experience it. I’m happy and energized for regardless of what existence has for me."

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Penisini did not expose why he was retiring, but next Penisini's rookie time, head coach Dan Campbell observed Penisini had surgical procedures to take away huge calcium deposits from his shoulders. 

Detroit Lions defensive tackle John Penisini (98) holds the line in opposition to San Francisco 49ers offensive deal with Daniel Brunskill (60) through a match in Detroit Sept. 12, 2021.  (Amy Lemus/NurPhoto via Getty Visuals)

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"[He] had what appeared like softballs in his shoulder that he had fixed soon after the time after the point," Campbell explained in 2021, through United states of america Nowadays. 

"It just seemed like a bunch of calcium deposits that had been in there. You ponder why when you observe the film past 12 months why he’s not utilizing his arm. It’s due to the fact he had challenges."

Detroit Lions defensive tackle John Penisini on the sideline in the course of a activity from the Cincinnati Bengals in Detroit Oct. 17, 2021.  (Amy Lemus/NurPhoto via Getty Images)

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Penisini was drafted by the Lions in the sixth round of the 2020 NFL Draft. He started off 12 online games in two seasons and registered 49 tackles,​​ a sack and a fumble restoration. 

"For my family members, pals, teammates, coaches and all the men and women who supported my aspiration along the way I respect and enjoy you guys. Go Lions," Penisini said.