The former Missouri Tiger led all of college football with 1,781 receiving yards in his senior season last year while catching 113 passes and scoring 14 touchdowns. When you combine that season with the fact he's 6-foot-5, 215 pounds and has pretty good speed, that kind of resume would lead you to believe Alexander should be a first-round, or at the very least, a first-day, draft pick.

The knee, however, kept that from happening.

As mentioned above, Alexander has had his left knee operated on four times, including two procedures to repair a torn ACL. He also had his wrist surgically repaired while at Mizzou and suffered a hamstring injury during the Senior Bowl. Injuries are always going to be an issue, which is the sole reason he wasn't drafted. He's a candidate to break down at any time.

But, there's also loads of physical ability here, as well as opportunity.

Former Rams No. 1 receivers Donnie Avery and Mark Clayton tore up their knees during the preseason and in Week 5, respectively. Clayton's injury opened up a spot on the wide receiver depth chart for Alexander, who had been on the practice squad strengthening the muscles in his left leg that had atrophied due to his latest knee surgery. The Rams had viewed 2010 as sort of a "redshirt" year for Alexander as he worked his way back to health, but after the Clayton injury, they elected to throw him into the fire.

With only Danny Amendola, who is purely a slot receiver, as well as Brandon Gibson, Laurent Robinson and Mardy Gilyard to compete with for snaps, Alexander has a chance to turn into Sam Bradford's go-to receiver. He could develop into a red-zone target, if nothing else, as he has way more size than any other Rams wideout.

The injury risk is obviously huge, and as impressive as his NFL debut was, it is still just one game. But there's certainly moderate-to-high upside here with a guy that could potentially be a team's top receiver over the remainder of the season.