Falcons cornerback Dunta Robinson has a concussion that leaves his playing status uncertain and linebacker Sean Weatherspoon will miss a second straight game with a sprained right knee.

Coach Mike Smith said Monday that Robinson sustained a concussion on his hit on Philadelphia wide receiver DeSean Jackson that knocked both players out of Sunday's game. Jackson also has a concussion.

Smith says Weatherspoon, the team's rookie starter, will not practice or play this week after missing the 31-17 loss to the Eagles.

The Falcons play the Cincinnati Bengals this week and then have a bye week. Smith says he hopes Weatherspoon, the first-round pick from Missouri, will return for a Nov. 7 game against Tampa Bay.