Brandon Cumpton made his first start in place of Wandy Rodriguez today, and he didn't disappoint. The right-hander went six innings, allowing two runs, one earned, on seven hits, with one walk and one strikeout. Cumpton now has a 3.38 ERA in his three starts this year, and a 2.55 ERA in 49.1 innings in his young major league career.

The scouting reports say that Cumpton will be a back of the rotation starter. His advanced metrics say that he won't be this good. Still, his xFIP is around league average numbers, and if that continues, he could have a chance to be more than just a back of the rotation guy.

Back in Spring Training, I spoke with Cumpton several times about his sinker, which isn't actually a sinker at all. It's a four seam fastball that just has so much movement that it ge...

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