WR Louis Murphy had a combined 75 catches for 1,130 yards and six TDs his first two seasons but caught just 15 passes for 241 yards and no TDs during an injury plagued 2011 campaign. “I have a big chip on my shoulder,” said Murphy, a fourth-round pick in 2009. “I have a lot to prove. … I haven’t played my best ball, and I know that those years are ahead of me.”