Complex sentence: At the 2008 Summer Olympics in Beijing, Peirsol won gold in the 100-meter backstroke and the 4x100-meter medley relay, and silver in the 200-meter backstroke.
Split into simpler sentences: At the 2008 Summer Olympics in Beijing, Peirsol won gold in the 100-meter backstroke and the 4x100-meter medley relay. He also won silver in the 200-meter backstroke.