Tough break for a tough wide outOne day after breaking the news that Demaryius Thomas will not participate in the combine due to a broken foot, TFY Draft Insiders has learned another highly rated receiver will miss the event because of an injury.

Sources have confirmed to us Danario Alexander, the leading receiver for the Missouri Tigers last season and a potential top 120 pick, had surgery on his left knee this past Tuesday.  Alexander has been ruled out of participating in both the combine and his pro-day workout.

Alexander, who caught 113 passes last season for 1781 yards and 14 touchdowns, originally hurt his knee while participating at the Senior Bowl in January.  His knee swelled after practice on Wednesday yet there was little pain.  Alexander later decided to play in the game on Saturday.

The following week an MRI showed Alexander had a defect in the cartilage of his left knee.  A team of specialists, including Dr. James Andrews, consulted with Alexander and recommended he undergo a surgical procedure to alleviate the situation prior to the combine.

Dr. John Uribe, presently the team doctor for the Miami Hurricanes, performed the surgery.  Uribe is best known for reconstructing the knee of Willis McGahee after his horrifying injury during the 2003 Fiesta Bowl.

Alexander suffered a prior knee injury in college, tearing an ACL in the same left knee during the 2007 Big Twelve title game.  The two injuries are not related and Alexander will send a letter, signed by Dr. Uribe, to all 32 NFL teams stating as much.

Though he will be unable to workout at the combine and pro-day, sources have told SI.com Alexander will be ready to go by training camp.

A vital weapon in the Missouri Tiger offense the past three seasons, Alexander accounted for 191 receptions and 2778 receiving yards during his college career.

The injury and resultant surgery came as a surprise to many as Alexander’s combine preparations were exceeding expectations.  During recent training the 6-foot, 4-inch, 221-pound receiver had been running forty times that hovered in the very low 4.4-second range besides posting a broad jump of 11-feet, 1-inch and touching 43 inches on the vertical jump.