LONDON (AP) — American swimmers Justin Zook and Mallory Weggemann are two of 40 athletes whose sport class has been changed before the start of the London Paralympics.

The International Paralympic Committee said Thursday that Zook and Weggemann, who have won 10 Paralympic golds between them, were reclassified on Monday after evidence was presented showing they weren't in the correct class.

The U.S. Paralympic Committee appealed the decision but it was rejected on Wednesday, meaning they will have to compete against more able-bodied swimmers.

Another U.S. swimmer, Victoria Arlen, was ruled ineligible Monday to compete at the games because her impairment didn't fit the classification. The USPC have also launched an appeal and a verdict is expected Thursday. Her name is currently off the official race lists.