Corey Knebel added to his already stellar All-Star season with a curveball that was just unfair

After wrapping up a 4-0 win over the Orioles on Wednesday night, the Brewers sit atop the NL Central with a 47-40 record. A standout performer in the club's solid first few months of the season has been Corey Knebel, who has been simply ridiculous at the back end of Craig Counsell's bullpen, setting records along the way.
He's been so good, in fact, that no other reliever in all of MLB has racked up as many strikeouts as Knebel -- and his nastiness helped him earn a spot on the NL All-Star roster. His is the type of hard-throwing, whiff-inducing, lights-out relief work that leaves batters in awe.
Like this:

That impossible, dreamlike curveball caught Welington Castillo off-guard in the ninth inning of Wednesday's game, and really, who could blame him? It's an unfair pitch from a guy having an incredible season.