Complex sentence: In July, 2011, Marrero was named the batting coach of the Billings Mustangs, Marrero was the manager of the Arizona League Reds for the 2013 season.
Split into simpler sentences: In July, 2011, Marrero was named the batting coach of the Billings Mustangs. He is the manager of the Arizona League Reds for the 2013 season.