Clemson added two more commitments to its 2011 football recruiting class last week, but the Tigers also saw a commitment come off their board.

Offensive lineman Isaiah Battle (6-7, 260 pounds) of St. George, Va., committed to the Tigers last week.

"Isiah's extremely athletic," said Battle's coach, Hal Smith. "He has great top end speed. He has a ton of potential, but he's extremely raw. He's eager and focused."

Battle is a native of Brooklyn, N.Y., and attends Blue Ridge High, which is a boarding school. He also had offers from New Mexico, Syracuse and East Carolina, and drew interest from Auburn.

Defensive end Joe Gore (6-6, 260) of Lake Waccamaw, N.C., also committed to Clemson, according to his coach Travis Connor. Gore had narrowed his list from 37 total offers to Clemson, South Carolina, Duke and N.C. State.

"He felt like Clemson was the place he wanted to go," Connor said. "He told coach (Dabo) Swinney he was all in."

Last season, Gore had 77 tackles with 16 sacks. "He's one of the best I've very coached," Connor said. "With his size, length and speed, he's going to be a defensive end. He's a great, great, great kid."

Defensive back Brandon Ellerbe (6-0, 203) of Wadesboro, N.C., was Clemson's first commitment for the 2011 class. He made his pledge last year, but this past weekend he became the second from the class to de-commit. Ellerbe told InsideCarolina.com that he now plans to sign with North Carolina.

Ellerbe had hinted at a possible switch last month and he made his decision after visiting Chapel Hill over the weekend. However, he does plan to continue making visits.

Clemson now has 13 commitments for the 2011 class.

South Carolina also added to its class with a commitment from linebacker Mason Harris (6-3, 190) of Rossville, Ga.

"(They) want to use me like (Eric) Norwood, rushing in and dropping back," said Harris who also has offers from Middle Tennessee and Chattanooga. Harris is the third commitment for USC's 2011 class.

Offensive lineman Giorgio Newberry (6-6, 255) of Fort Pierce, Fla., over 37 offers including Clemson, USC, Florida, Tennessee, Boston College, Stanford, North Carolina, N.C. State, Wisconsin, Notre Dame, and Alabama.

Defensive back Ra'chard Pippens (6-1, 188) of McDonough, Ga., has offers from USC, Northwestern, Maryland, Stanford, Harvard, Indiana, Wake Forest, and Mississippi State. USC is his top school. "It is South Carolina, Northwestern, Stanford, Maryland, and Harvard," said Pippens.