Simmons (hamstring) was a full practice participant Thursday, Will McFadden of the Falcons' official site reports.
Simmons was unable to play during the Falcons' Week 8 win over the Buccaneers due to a hamstring injury. The injury limited him in practice Wednesday, but he was able to practice without restrictions Thursday. Barring any setbacks, he should be good to go against Dallas on Sunday. Across seven regular-season games, Simmons has logged 28 tackles (15 solo), three pass breakups and one interception.