If you have been following baseball with any regularity over the last few years, you are familiar with Aroldis Chapman, a lefty reliever with the Cincinnati Reds. Since making his Major League debut in 2010, he has been one of the most formidable relievers in all of baseball this side of Craig Kimbrel. He utilizes a fastball in the upper 90’s and a slider in the mid 80’s, his bread and butter.
Obviously, Chapman is in a league of his own — nobody compares to him, not even Billy Wagner, one of the greatest left-handed relievers of all time. However, did you know that the Phillies have their own lefty reliever who makes use of a fastball in the high 90’s and a mid 80’s slider? His name is Jake Diekman, and he has emerged as one of the Phillies’ more reliable arms as the season has gone on.