Kelvin Herrera has a 1.05 ERA and 0.818 WHIP in 27 appearances this season. But it's his most recent outing - which turned out to be his final inning with the Kansas City Royals - that MLB Network's Ken Rosenthal said could be more than just a blemish.
With the Royals leading the Cincinnati Reds 1-0 last Tuesday, Herrera entered the game in Kansas City in a save opportunity. But he gave up a game-tying leadoff home run to Reds catcher Tucker Barnhart, and also walked Joey Votto and Jesse Winker before getting an inning-ending groundout from Adam Duvall to limit the damage to one run.