After breaking onto the Major League scene in 2013, many believed Gerrit Cole would be the next young ace. He started 19 games for Pittsburgh and posted a respectable 3.22 ERA. And at 24, after starting 32 games and pitching to a 2.60 ERA, it seemed he had arrived. Now he joins the Astros to win another championship in 2018.
But his stay among the top pitchers of the game was short-lived. The past two seasons have been mediocre at best for Cole. A 4.12 ERA in that span can attest to it. But what has caused his dramatic drop-off?