The changeup was by far Adam Warren’s most successful strikeout pitch. It generated a 31.3 K% and just a 3.1 BB% for a whopping 28.1% K-BB. Of the 99 changeups Warren threw in 2019, 54 of them were in two-strike counts, so he is looking to his changeup as his strikeout pitch with most of the pitch’s success coming when he throws it out of the zone. He had a 36.6 Sw% and 50% whiff rate for his changeups out of the zone, but in the zone, he had a huge 89.3 Sw% but just an 8% whiff rate.
Adam Warren only threw his curveball 23 times in 2019 (4.1%). It was successful in that it didn’t allow any hits, but it wasn’t fooling anyone either. Other than inducing one groundout on the season, hitters ignored the pitch, taking it 87% of the time and swinging and missing just twice. His curveball was deployed in 0-0 counts 17 times and was used with two strikes just once.
As his average fastball velocity has dropped over his MLB career (from 94.2 mph in 2014 to 91.4 in 2019), Warren has reduced his fastball usage from 50.3% in 2013 to 30.8% in 2019. He only threw the pitch in the strike zone 39% of the time and so it shouldn’t be a surprise that his K-BB% on the pitch is just 5.7% (20.0%-14.3%).
The slider was Warren’s most used pitch (47.2%) in 2019. He has replaced his early-career reliance on his fastball with heavier usage of his slider (in 2013, he only threw his slider 20.4%) and since his slider has always grabbed a higher Whiff% than his fastball, it is probably wise for him to increase its usage. In 2019, Warren’s slider had a 39.31 Sw% and an 11.83 whiff%, generating 30.1% whiffs per swing.
As was the case in 2017, Warren threw his slider the most of any pitch at 45.8%. He showed great command of it with a 43.8% zone rate (44.1% in 2017) and a good chase rate of 32.1%. However, it wasn’t adept at getting swings and misses with a fairly modest 26% whiff rate and 11.2% swinging-strike rate.
Sitting at just under 92 mph, the four-seam fastball was thrown exactly 40% of the time. It had a reasonable whiff rate of 24.4% (21.9% in 2017). Overall, it was a serviceable but unspectacular pitch with a 0.7 pVal.
Thrown just 8.3% of the time, the change is a distant third pitch for Warren. It was less effective in 2018 with a drop in swinging-strike rate to 11% (14.7% in 2017) and a 26.3% chase rate (41.1% in 2017).
Thrown just 5.8% of the time, the curve was of little note for the veteran reliever. It showed a little bit better of a whiff rate last year at 31.3% (22.7% in 2017), but other than that, there’s not much else to note here.