Alge Crumpler's chronically sore knee could sideline the four-time Pro Bowl tight end for the Atlanta Falcons' game at New Orleans on Sunday. Crumpler, the Falcons' leading receiver the last three years, has played in 40 straight games, including 39 starts, despite having arthroscopic surgery on his left knee the last two offseasons. He was held out of practice this week. If he can't play, Crumpler would be the third offensive starter, joining left tackle Wayne Gandy and right tackle Todd Weiner, sidelined because of knee injuries in the last two weeks.