In early 2003, Cousins injured his ankle in a game against Hawthorn but played on through five weeks of pain-killing injections. In Round 15, 2004, he injured his back and missed six games. Cousins said, "That injury is something that I got over and am probably no chance of getting a relapse... The other side to it is, because I have played 10 years of consistent AFL footy, I've probably got an older back than someone my age". In Round 1, 2005, he dislocated a finger and missed one round after undergoing an operation. West Coast chief executive Trevor Nesbitt said, "There's no doubt that he's at his best when under pressure and he's so resilient; he plays with injuries that other players wouldn't".