Giants running back Andre Brown has won his appeal against the NFL for violating the league's performance-enhancing substance policy, NFL spokesman Greg Aiello confirmed today.

The four-game suspension the league handed down to Brown on March 30 has been lifted, Aiello said, though other details of the appeal and false violation will remain confidential. Brown had been suspended for the first four games of the 2012 season without pay as a result of the positive test.

Brown, a 2009 fourth-round draft choice of the Giants who spent last season on the team's practice squad, had tested positive for performance-enhancing drugs but the league never released details of the test.

Brown claimed the positive test was for Adderall, a commonly prescribed medication for attention-deficit hyperactivity disorder, for which Brown had a prescription.

The lifting of Brown's suspension changes the dynamic of the running back competition in Giants camp this summer. Behind incumbent starter Ahmad Bradshaw, Brown, D.J. Ware, Da'Rel Scott and first-round draft choice David Wilson will be competing for snaps.

At the Giants' organized team activities earlier this week, running backs coach Jerald Ingram praised Brown's development through last season and into this offseason.

"Athletically, he might be as good as anybody out there," Ingram said of Brown, who during the 2010 season alone played for four teams. "But his ability to learn in a lot of people’s offenses, because he’s had the world tour, that has been his weakness. Now, he came back last year and showed that he actually could learn some of the things that we had done, and as he progresses and gets that opportunity, he has the size to pick up 250-pound linebackers. He’s got physical toughness, he has got great hands, he has that ability but can he put it all together is what we’re interested in seeing finally, has he matured to that level of being an every down back? We took him, the Giants took him, thinking that he had that ability to be a solid every down type of back, like we had in a Derrick Ward."