On January 10, 2010, Aroldis Chapman agreed to a long-term contract with the Cincinnati Reds.

According to MLB scouts, Chapman's fastball has been clocked as high as 102 MPH. He also throws a plus slider and an average changeup. Scouts worry about his control issues and lack of a solid third pitch, noting that these issues could affect his ability to be a major league starter. Chapman bats and throws left-handed. He is listed at 6'4" tall and weighing 180 pounds.