Source: Buccaneers' Tristan Wirfs believed to have sprained MCL

TAMPA, Fla. -- The Buccaneers believe that All-Pro left tackle Tristan Wirfs suffered a sprained MCL in the first half of Tampa Bay's 23-20 loss to the 49ers, a source told ESPN's Jeremy Fowler.

The three-time Pro Bowl selection and team captain will require additional testing, including an MRI, to determine the severity, the source told Fowler.

Wirfs suffered the injury on a third-and-7 play with 5:06 to go in the second quarter. He was lining up against Nick Bosa while pass blocking when the injury occurred.

He was replaced by former 49ers offensive tackle Justin Skule, who played for San Francisco from 2019 to 2021. Skule started four games this season at right tackle when Luke Goedeke was sidelined with a concussion.

"Losing Tristan - it sucks," center Graham Barton said. "We're all really close. To have a guy like that, he's such a vital part of not only our football team but our identity and our chemistry and culture. It's not easy to see that happen. So, we've just gotta rally around the guys that we've got. And we've gotta go out there and play just as hard as we would no matter what.

"I've got full confidence in Justin. He played his butt off when he came in today, so we're excited to get the opportunity to work with the cards we're dealt. We've just gotta pray for Tristan at this point. Hope it's a good result and just sort of root for him in his recovery."

Skule said being in the same Niners draft class with Bosa and having gone against him in practice each day for three years helped him.

"It's awful," Skule said on losing Wirfs, whom he is particularly close to. "You never wanna see that for anyone, but for a guy like that, playing at an elite level like he always is, it's tough. But it's one of those things where in the game, you can't really think about it. Now is really the time you sit back and check on him and see if he's OK and be there for him."

The Buccaneers are already without Pro Bowl wide receiver Chris Godwin, who suffered a dislocated left ankle and is out for the season. Wide receiver Mike Evans has been out for three games with a hamstring strain, but the hope is he can return after the Buccaneers' Week 11 bye.