Big 12 players on and off the field this week

Lots of personnel news across the Big 12 on Monday.

Missouri loses two more

Missouri is already playing without senior left tackle and captain Elvis Fisher, who will miss the season with a torn patellar tendon. So far this season, the Tigers are dealing with more injuries than any team in the Big 12.

Starting senior linebacker Will Ebner will miss Friday's game against Arizona State with a high ankle sprain, Gary Pinkel announced on Monday. He sprained the ankle in the first half of Saturday's win over Miami (OH) and did not return.

Defensive end Jacquies Smith will also miss Friday's game after dislocating his elbow in Saturday's game.

The Tigers already were playing without center Travis Ruth, and he won't make his return on Friday.

Marquise Goodwin in

Texas receiver Goodwin missed the spring and looked like he'd miss the first part of fall camp to compete on the track.

So, he decided to redshirt and return to the team in 2012. Until Monday, that is, when Goodwin announced he'd be returning to the team and be in practice on Tuesday.

"Words can't even explain how I excited I am right now to be getting back on the football field," Goodwin said in a release. "When I was overseas, I was missing football, the guys and being a part of the team so much. I thought about how they were getting ready for the season, working hard and pulling together, but it really hit me when I was in the airport on my way back from Seoul."

Goodwin caught 31 passes for 324 yards and a touchdown as a sophomore in 2010.

Tech starter out with 'deflated lung'

Defensive end Leon Mackey was one of the most hyped newcomers on Texas Tech's team, but he made just four tackles before being injured in Saturday's win over Texas State. On Monday, coach Tommy Tuberville announced the injury was a "deflated lung," suffered on a big hit.

The injury forced him to spend 24 hours in the hospital.

"It's up in the air how long he'll be out," Tuberville told reporters Monday. "Probably several weeks, maybe more."