A fireballing righthander with a 96mph heater, De Los Santos has a good future ahead of him, likely in the bullpen. While his secondary pitches are acceptable, an even slightly-improved change would help him get better results with his fastball, making him a potent late-inning option. Scuffling through a so-so season in Midland and Sacramento in 2011, Fautino actually looked better once he was called up to the A's, and his 11.61 K/9 rate as a major leaguer is impressive enough to give him an edge on a permanent bullpen role in Oakland right away.