Ryan Broyles thought his Achilles tendon felt a little sore before the Lions’ Week 8 game against the Cowboys, but team trainers told him there was no way to predict if it would become a serious injury.

In the third quarter of the game, Broyles was back for a punt return and planted on his left leg.

“Immediately I felt it pop,” he said Tuesday night. “And I tried to take a step and I just fell, and it just reconfirmed how I felt the week before, to be honest.

“I knew it was my Achilles.”

Broyles, a 2012 second-round pick from Oklahoma, ruptured the tendon and suffered his third season-ending leg injury in as many years, but he said the six- to nine-month recovery time could mean he’ll be back for training camp in August 2014.

With a walking boot on his left leg, a high-spirited Broyles visited the Best Buy in Novi Tuesday night to sign autographs and play “Madden NFL 25” in front of a group of fans. The store hosted a 64-person Madden tournament, and Dak Mobley from Pittsburgh — who drove with his brother and cousin Tuesday morning — won a trip for two to play in a national tournament on the Jumbotron at Cowboys’ AT&T Stadium.

Skeptics wonder if a torn ACL in each knee and now a torn Achilles could end Broyles’ career, but the cheerful 25-year-old vowed to make a comeback.

“Some people might say, ‘Why aren’t your spirits down?’ ” he said. “My body’s going to heal. I’m 25 years old, so I’m very optimistic about the whole deal. I’ve just got to take it a day at a time, and when my time comes I’ll be back on the field.”

Broyles tore the ACL in his left knee during his senior season at Oklahoma in 2011. He didn’t catch a pass for the Lions until Week 7 last year, and he tore his right ACL in Week 13.

After fighting the same battle a second year in a row, Broyles participated in all of the Lions’ offseason workouts in 2013, and he was back on the field in Week 3.