Pisa Tinoisamoa feels he needs to prove himself every week

About how he feels that he still needs to prove himself every week despite being named a starting LB with the Bears, Pisa Tinoisamoa said:
"I'm not even sure if I really got accepted yet. I mean, everyone has been cordial and nice to me. But week in and week out, you just have to show not only to your teammates but to yourself that you're good enough to hang around." (LA Times)

http://www.latimes.com/sports/la-sp-random31-2009aug31,0,5909564.story