The Facts: Following up on the previous item. ... The Broncos released Arrington on Wednesday after it was determined the running back will need season-ending microfracture surgery on his troublesome right knee.

Diehards Line:Arrington, who was slated to become the Broncos' third-down back after he was signed away from the NFC champion Arizona Cardinals, had been trying to recover from offseason arthroscopic knee surgery performed by an Arizona surgeon. As Arrington struggled to regain strength in his knee, the Broncos used the No. 12 pick last month to select Knowshon Moreno. As Post staffer Mike Klis notes, even with Arrington gone, the Broncos have considerable tailback depth with Moreno, Correll Buckhalter, LaMont Jordan, Ryan Torain, Darius Walker and Peyton Hillis, whose versatility could earn some third-down snaps.