Rookie cornerback Tre Brown has been a bright spot for the Seahawks defense since taking over a starting job at left cornerback, but on Sunday Brown left the game with a potentially serious knee injury. 

Covering a deep pass to Cardinal receiver A.J. Green down the right sideline, Brown's knee appeared to give out on him as he attempted to make a play on the ball. Brown was able to leave the field under his own power, albeit with a significant limp. 

After the game, Seahawks coach Pete Carroll said Tre Brown, injured his patellar tendon, and while Carroll stopped short of declaring it a season-ending injury—more tests are no doubt coming on Monday—he did say, "Tre has a patellar tendon injury, and those are pretty tough." 

With D.J. Reed inactive for the game due to injury, the Seahawks had Sidney Jones IV starting at right cornerback to begin the game, then after Brown's injury Jones went to the left side, where he has started games this season, and Bless Austin came in to play right corner. 

In other injury news, running back Rashaad Penny got the start on Sunday, and ripped off an 18-yard run on Seattle's first play from scrimmage, but unfortunately he felt something in his hamstring on that run, and sat out most of the rest of the game, though he did come back for one 1-yard carry. 

Carroll said Penny felt, "something in his hammy. One run and he felt it. So we spent the rest of the first half basically trying to keep him warm to see if he pulled his hamstring or if he just felt something. He kind of felt OK and got close to getting back out there, but it wasn't quite right."  

Carroll added, "We would have loved to have seen him play. We were really excited to see him play today and get a bunch of turns."

Asked if there were any other injuries, Carroll said, "Jordyn (Brooks) might have a little bit of a hip thing that's bothering him. (Brandon) Shell's shoulder was really sore during the game."