A concussion suffered during training has forced Mike Swick out of his welterweight title eliminator against Martin Kampmann at UFC 103 “Franklin vs. Belfort” on Sept. 19 at the American Airlines Center in Dallas.

Swick confirmed the news via Twitter.

“I am out of UFC 103,” he wrote. “It sucks, and I am sorry guys. I got foot swept while sparring this week and lost my legs. Landed on back of my head and neck and suffered a pretty bad concussion.”

According to Martin Zelaznik, the UFC’s top executive in England, EliteXC veteran Paul Daley will replace Swick in the match against Kampmann.

“Semtex has come to the UFC with a lot of hype, a lot of ability and -- as he’s already proved -- a lot of confidence,” Zelaznik told The Sun, a U.K.-based publication. “He was asked to step up and -- real fighter that he is -- he accepted right away.”

Daley was originally scheduled to meet Brian Foster in his UFC debut at the event, but Swick’s misfortune provided the Brit with a golden opportunity to move up the card. A gifted striker, the 26-year-old Daley has posted nine wins in his last 11 bouts, losing only to former Bodog Fight champion Nick Thompson and world-ranked welterweight Jake Shields in that span.