Gaudin in his career: 395 Innings,ERA+ of 97, 4.4 ERA, 1.53 WHIP Bush in his career: 660 Innings, ERA+ of 98, 4.64 ERA, 1.268 WHIP They're pretty similar. Now, Gaudin is a few years younger so perhaps there's a bit of a reason to think he'd be an upgrade over Bush, but not enough to trade for IMO. The Brewers shouldn't bother trading for someone who might be good enough to be their 4th or 5th starter.