Lets compare the two. Hart: 163 AB's .245 AVG, .322 OBP, .399 SLG, .721 OPS, 4 HR, 18 RBI, 19 BB, 44 SO Holliday: 156 AB's .269 AVG, .352 OBP, .429 SLG, .781 OPS, 6 HR, 27 RBI, 17 BB, 28 SO I dont see a signifigant upgrade other than Holliday doesnt strikeout as much. So I wouldnt want to waste sending prospects over to the A's for a minimal upgrade.