7. Luke Little
I think the most logical bullpen call-up for September is Luke Little. The 22-year-old was taken by the Cubs in the 4th round of the 2020 draft and he is currently dealing in Iowa. In 9.2 innings, Little is sporting a 1.86 ERA with 18 strikeouts. After starting the year in South Bend, Little now finds himself on the precipice of a call-up.
The fact that Little is a lefty is sort of an afterthought thanks to the guys' intimidating frame. At 6'8 and 2020 pounds, Little is a force to be reckoned with and his fastball sits at 93-97 mph while a plus slider acts as his secondary pitch. With Brandon Hughes still injured and Anthony Kay sent back down to Triple-A, the only lefty in the bullpen is Drew Smyly. Little would be a nice complement and bring a bit more velocity to the equation.