Although it’s a secondary piece of the Foltynewicz arsenal (9.5%) the changeup did return a very respectable 18.1% swinging k rate (13.4% in 2018) to go along with a 35.6% chase rate and excellent 49.2% zone rate. It also held opposing hitters to an outstanding .236 xwOBA.
Foltynewicz continued to use curveball at just about 10% this past season. He can get strikes with it (49.7% zone rate) but it’s not much of a swing and miss pitch evinced by a modest 27.2% chase rate and 9.3% swinging K rate.
Folty struggled to keep his four-seamer under control due to nasty 53.2 FB% which resulted in an ugly spike in his ERA from 2.85 in 2018 to 4.54 last season. He spent a bit of time in AAA Gwinnett trying to rectify a number of issues, namely the .636 xSLG against this fastball. It never quite happened. If he can control the heat, which is rapid, he can return to the form of his 2018 All Star.
The batted ball results with the slider this past season weren’t nearly as flawless as 2018’s .180 wOBA and .111 batting average allowed. This past season the slider surrendered a .320 wOBA and .242 batting average despite an identical swinging K rate of 17.9%, similar chase rate of 38.6% (40.1% in 2018), and zone rate of 43.3% (45.8% in 2018). Keep in mind though that both his slider and fastball velocity were down roughly 1.3 mph so that certainly could have played a part in the noticeably different results we saw these past two seasons.
Sometimes touching 100 mph with his fastball, Foltynewicz mainly uses it to play against his many skillful offspeed pitches. He throws his fastball less than 40% of the time and is successful with decent control at that velocity.
An incredible slider, Foltynewicz struck out batters at over a 40% rate with this pitch. With nearly a 20% whiff rate, he kept batters off balance resulting in a .107 batting average against.
A hard two-seamer with a ton of ground balls, Foltynewicz may have been a bit unlucky with this pitch. He walked a few too many, yet many ground balls still resulted in a nearly .400 BABIP against.
Another plus pitch Foltynewicz throws only occasionally, his curve is usually put in the air, however, seldomly goes beyond the wall. He limited batters to a sub .200 batting average against.
Foltynewicz’s fifth pitch was still a plus pitch. He may want to throw this more as picking up a few miles per hour on it produced better results. He rarely saw fly balls while also getting the occasional strikeout.