 After Brian Roberts went down with an injury 3 games into the season, Casilla entered a platoon with Ryan Flaherty at second base.Through June, Casilla was hitting .222 with 8 RBI and 10 R. When Roberts returned on June 30, Casilla's playing time drastically diminished, leading to only 4 appearances in all of July, and 20 appearances after June despite being healthy.In 62 games (31 starts) in 2013, Casilla hit .214 with 1 HR, 10 RBI and 15 R. He did not make an error in 170 chances in the field, with 169 of those being at second base.