Photos: USA Olympic Swimming Trials

Katie Ledecky reacts after winning the women’s 200-meter freestyle.

Maya DiRado gets ready to swim in the women’s 200-meter individual medley final.

Maya DiRado swims in the women’s 200-meter individual medley final.

Maya DiRado, left, smiles in front of Melanie Margalis, right, after winning the women’s 200-meter individual medley final.

Michael Phelps competes in the final heat for the Men’s 200 Meter Butterfly.

Michael Phelps swims in the men’s 200-meter butterfly final.  (Orlin Wagner / AP)

Michael Phelps celebrates after winning in the final heat for the Men’s 200 Meter Butterfly.

Michael Phelps reacts after winning the final heat for the Men’s 200 Meter Butterfly.

Cammile Adams competes in a preliminary heat of the Women’s 200 Meter Butterfly.

Nathan Adrian reacts after winning a semifinal in the men’s 100 freestyle.

Cammille Adams spits water prior to her heat in the women’s 200-meter butterfly preliminaries.

Cassidy Mayer, left, and Cammile Adams swim in the women’s 200-meter butterfly preliminaries.