Aroldis Chapman participant of 2012 Major League Baseball season
2012 season
Chapman was due to be introduced as a starter for the 2012 season, but preseason injuries to closer Ryan Madson and middle relievers Bill Bray and Nick Masset led manager Dusty Baker to put Chapman in the setup role. Interim closer Sean Marshall struggled early in the season, and Chapman was given the closer role in late May.On July 1, 2012, Chapman was named to his first All-Star Game. Chapman won the MLB Delivery Man of the Month Award for July 2012, in which he recorded 13 saves while not allowing a run in 14+1⁄3 innings while striking out 31 batters—more than 60% of the batters he faced. It was the third month of the season in which he did not allow a single run. He was named the August Delivery Man of the Month. Chapman finished the 2012 season with a 1.51 ERA and 38 saves in 43 chances, recording 122 strikeouts and 23 walks in 71+2⁄3 innings.