Macklin Groot (RSD-SI) in the Men's 100m Backstroke prelims, at the Speedo Grand Challenge Swim Meet, on May 27, 2012, in Irvine, California. (AP Photo/Wayne Jones Stock Photo - Alamy

Download this stock image: Macklin Groot (RSD-SI) in the Men's 100m Backstroke prelims, at the Speedo Grand Challenge Swim Meet, on May 27, 2012, in Irvine, California. (AP Photo/Wayne Jones) - 2P6D038 from Alamy's library of millions of high resolution stock photos, illustrations and vectors.
Macklin Groot (RSD-SI) in the Men's 100m Backstroke prelims, at the Speedo Grand Challenge Swim Meet, on May 27, 2012, in Irvine, California. (AP Photo/Wayne Jones)

Macklin Groot (RSD-SI) in the Men's 100m Backstroke prelims, at the Speedo Grand Challenge Swim Meet, on May 27, 2012, in Irvine, California. (AP Photo/Wayne Jones Stock Photo - Alamy

Macklin Groot (RSD-SI) in the Men's 100m Backstroke prelims, at the Speedo Grand Challenge Swim Meet, on May 27, 2012, in Irvine, California. (AP Photo/Wayne Jones Stock Photo - Alamy