10. Brad Keller
Brad Keller made his MLB debut in 2018 with the Kansas City Royals and was one of the few bright spots to their difficult season.
Keller served the role of a swingman, making 20 starts and 21 relief appearances on the season. Keller did a great job keeping the ball in the ballpark, as he only allowed seven home runs across 140 1/3 innings pitched.
His ability to keep the ball in the yard was one of the biggest reasons for Keller’s impressive 3.08 ERA.