Just three curveballs on the ledger this past season for Wisler, and just 17 in 2018 (2.8% usage). A slow, looping type of curveball at 74 mph is not an appreciable part of his arsenal.
Wisler’s four-seam fastball features below-average spin (28th percentile) and sits just under 93 mph. This past year, it returned an uninspiring, to put it nicely, 2.8% swinging-strike rate (12.9% whiffs). As far as fastballs go, it’s not a particularly exciting one. In a similar fashion, his sinker isn’t a bat-misser (6.7% swinging-strike rate) and was rocked to the tune of a .528 wOBA (.383 xwOBA).
Wisler upped his slider usage just a bit last year. From 47% to … 70%. Whoa, hello! And that was across a decent 51.1 IP sample. The slider was phenomenal in 2019, as he could throw it for strikes at will (44.7% zone rate), getting chases with it (42.8%), and swings-and-misses (20% swinging-strike rate, 40.8% whiffs). It’s awfully hard to imagine what Wisler would have done without it.
Wisler is essentially a two-pitch pitcher with an ineffective fastball. He leaves it up on a tee for hitters as they have an enormous .650 slugging against it.
On the other side of the coin, Wisler’s go-to pitch is his slider. Hitters cannot lay off of it nor can they make contact leaving them with an abysmal .176 batting average against and a 20% whiff rate.
A pitch Wisler rarely throws, his curve may be more of a slowed down version of his slider than an entirely separate pitch. He stopped throwing it once he joined the Reds in 2018.