Injuries are a brutal part of the NFL, and this rookie just found out the hard way.
Mere days ago, it seemed as if undrafted rookie running back Corey Kiner had an inside track toward securing a spot on the San Francisco 49ers' preliminary 53-man roster.
Now, Kiner is off the Niners roster.
Well, somewhat. After suffering a high-ankle sprain during San Francisco's preseason Week 2 victory over the Las Vegas Raiders, one that was expected to sideline him for at least a few weeks, the 49ers opted to waive/injured the former Cincinnati tailback despite impressive showings over the first two weeks of exhibition action.