Sun Yang
At the 2013 World Aquatics Championships, Jaeger qualified to swim in three individual events: the 400-, 800-, and 1500-meter freestyle. In his first event, the 400-meter freestyle, he placed third in the final with a personal best time of 3:44.85, finishing behind Sun Yang and Kosuke Hagino. In his second event, Jaeger placed 4th in the 800-meter freestyle in a personal best time of 7:44.26, finishing behind Sun Yang, teammate Michael McBroom, and Ryan Cochrane. In his third and last event, the 1500-meter freestyle, Jaeger placed 4th in the final with a personal best time of 14:47.96.