Sosa (groin) will start at third base and will bat seventh Thursday in Game 3 of the wild-card series in Atlanta.
Sosa had to leave Game 2 on Wednesday after aggravating a groin injury that he initially suffered Sunday. While he is surely well less than 100 percent, Sosa will attempt to play through the injury. He's gone 2-for-6 with a double and a 0:1 BB:K in his first two games of the postseason.