St. Louis Rams running back Isaiah Pead tore his anterior cruciate ligament.
Pead returned a kickoff, injuring himself without being hit when his leg bent awkwardly
Pead is a 2012 second-round draft pick.
He was running behind Zac Stacy and Tre Mason on the depth chart.
Follow me on Twitter: @RavensInsider
Aaron Wilson covers the Ravens for The Baltimore Sun
Check out our partners at TiqIQ for the best deals on all games on the 2014 NFL schedule.
SEP 12 Football Rumor Mill
Here's what you need to know after 2 weeks of college football.
SEP 11 Jesse Lawrence
Jesse Lawrence takes a look at some affordable NFL action this weekend.
SEP 07 Joel Corry
Can the Seahawks repeat? Are the Chiefs and Panthers ripe for a fall? The NFP takes a look at those questions and more.