What It Means:

Gregerson will return to a setup role in the Astros bullpen. He owns a 4.13 ERA and 31/8 strikeout-to-walk ratio over 28 1/3 innings pitched this season.

Gregerson's 2.99 xFIP is significantly lower than his ERA, and his 27.0 strikeout percentage is well above the 21.1 percent that is league average. Our models project him to record a 2.63 ERA and a 22.8 strikeout percentage over the remaining course of the season.