Sean Doolittle

Age 34 RP
  • Born 09/26/1986
  • Bats L
  • Team: Washington Nationals
2019 Statistics
W-L
-
IP
ERA
0.00
WHIP
0.00
K
K%
0.0
2020 Prediction
Coming Soon
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2018
2019
Changeup
5.9% Thrown 83.7 MPH 15.2 CSW%
Four-Seamer
88.0% Thrown 93.5 MPH 25.7 CSW%
Slider
6.1% Thrown 81.0 MPH 30 CSW%

Similar to the slider, Doolittle’s changeup is utilized under 10% of the time. It’s not a great pitch, and he has trouble locating it, evidenced by a 30% zone rate. Doolittle should increase the usage of his slider and essentially eliminate his changeup.

GIF made by Ryan Amore. Blurb written by Max Freeze

Doolittle has one of the most extreme fastball-heavy arsenals, throwing the heater 88% of the time. His velocity continues to decline ever so slightly over the last several seasons, which could have contributed to a decrease in performance. He was bitten by the home-run ball with a double-digit HR/FB% in 2019 against the fastball. He also gave up a lot more contact as the SwStr% dropped by 5.2% in 2019. Doolittle’s primary offering went from elite to just good in 2019.

GIF made by Ryan Amore. Blurb written by Max Freeze

Obviously, Doolittle’s slider isn’t a large part of his game, but it’s provided positive pVals in each of the last three seasons. It generated a near-20% swinging-strike rate in 2019 and induces weak contact. If Doolittle’s fastball ever starts to slip, he has a solid secondary pitch to fall back on.

GIF made by Ryan Amore. Blurb written by Max Freeze
2018
2019
Four-Seamer
89.2% Thrown 93.9 MPH
Changeup
7.4% Thrown 85.1 MPH
Slider
3.4% Thrown 81.9 MPH

Doolittle almost exclusively uses the four-seam fastball and for good reason. The pitch generated .142 batting average against with a near 38% strikeout rate. Despite elite numbers against, he lost one mph on the pitch and its horizontal arm-side run started to dwindle.

Doolittle ditched the splitter and went to the changeup as his primary offspeed pitch in 2017. It generated a high percentage of ground balls and a miniscule .100 batting average against in 2018.

The slider is used infrequently, but is a plus pitch for Doolittle. It gets swings and misses outside the zone and has not allowed a base hit in the last 66 pitches thrown. The slider is most effective because it keeps hitters off balance with a 12 mph velocity differential from the four-seamer.

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