It’s a tough choice between the two, as both are solid end of the rotation guys. In the majors, Fitts has a 4.83 ERA with 34 strikeouts, and a WHIP of 1.317 in 41 innings pitched. Harrison has an 4.56 ERA with 25 strikeouts and a WHIP of 1.268 in 23 innings pitched.

The Boston Red Sox are pulling Walker Buehler from their rotation and sending the struggling right-hander to the bullpen

In 22 starts, Buehler posted the worst numbers of his career with a 5.40 ERA, 16.5 percent strikeout rate and 10.7 percent walk rate.