Heidi White has reportedly withdrawn from the Olympic equestrian team. Her horse, Northern Spy, apparently has medical problems of some type. Very little information is available at the moment.
Karen O'Connor will take White's place, and will be riding Mandiba. Although she almost missed her shot at the 2008 Olympics, this will actually be O'Connor's fourth Olympics. In 1996, she won the silver medal at the Atlanta Olympics along with her husband, David.