Born: Neenah, Wisconsin
Age: 22 (5/18/97)
Height/Weight: 6’2”/205 lbs.
School: Kent State University (Kent, Ohio)
Connor Wollersheim stood out while playing for Appleton North High School, posting a cumulative 1.59 ERA in 132.1 innings there, punching out 193 batters, but he was especially good in his senior year. Earning All-District, All-Area, and All-Conference honors, he posted a 0.73 ERA in 42.0 innings, striking out 64. He had a commitment to Kent State University and honored it, debuting for the Golden Flashes in 2016.
In his freshman year, he started eight games and appeared in ten total, posting a 3.10 ERA in 40.2 innings, allowing 43 hits, walking 21, and striking out 25. He played for the La Crosse Loggers of the Northwoods League that summer, posting a 6.00 ERA in 30.0 innings, allowing 35 hits, walking 15, and striking out 31. Returning to Kent State for his sophomore year, Wollersheim pitched 50.2 total innings, starting four games and pitching out of the bullpen in twelve. He posted a 3.91 ERA, allowing 47 hits, walking 23, and striking out 46. He returned to the Northwoods League that summer, this time pitching for the Green Bay Bullfrogs, where he posted a 2.44 ERA in 55.1 innings, allowing 46 hits, walking 24, and striking out 56. In 2018, his junior year, the southpaw posted a 4.02 ERA in 56.0 innings, allowing 47 hits, walking 18, and striking out 44. He played in the Cape Cod League that summer, pitching a single inning for the Bourne Braves before returning to Kent State for his senior year. Pitching as a bona fide starter for the first time in his collegiate career, Wollersheim posted a 4.04 ERA in 78.0 innings, allowing 73 hits, walking 36, and striking out a career high 90.
Wollersheim throws from a three-quarters arm slot, his release point lower than most three-quarters pitchers because of the drop-and-drive elements in his delivery. His arm action behind the back has a little bit of stab but is free of potential injury red flags. His arm speed is below average, and the southpaw has a slingy delivery as a result.
His fastball sits in the high-80s-to-low-90s, generally hovering around 90 MPH. It has some sink as it comes to the plate, but the left-hander often lacks the ability to command it, preventing him from taking advantage of that natural sinking movement. He complements the pitch with a slurvy slider and a better formed curveball. The slider sits in the mid-70s, while the curveball sits in the low-70s. Both pitches lack bite and depth, and are used primarily to change batters’ eye levels, steal strikes when they are thrown unexpectedly in counts where breaking balls are risky, and to set up his fastball.