Some of the PA'ers have mentioned Britton as a replacement for Farnsworth. I'm not sure why he looked so bad in spring training, but putting on the Pinstripes does that to players. His line last year was very good, although without watching him it's hard to tell the quality of his appearances:
BAL 52 games: 53.7 IP, 46 Hits, 20 ER, 4 HR's, 17 BB, 41 K's and a 3.35 ERA
In AAA, he didn't have much work, but had 5 Saves in 6 IP and a 0.00 ERA.