Complex sentence: He allowed one run on five hits in a 5-1 Nationals victory against the Los Angeles Dodgers on April 23,2010, his first major league start and first major league win.
Split into simpler sentences: He allowed one run on five hits in a 5-1 Nationals victory against the Los Angeles Dodgers on April 23,2010. This was Atilano's first major league start and first major league win.