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Josh Winckowski
Boston Red Sox · RP Throws: R Bats: R Height: 6'4 Weight: 215 Born: )
Percentile Ranks
vs LHH
vs RHH
K%
58.3
7.0
xWOBA
0.378 · 17%
0.392 · 2%
xSLG
54.2
4.7
 

Year Team G GS W-L IP ERA WHIP K% CSW% BB% xAVG xSLG xwOBA xISO BAR% SS% HH% GB% LD% FB% Z%
Z
Sw%
OZ%
OZ
Sw%
Apr May Jun Jul Aug Sep
2025600-111.23.861.4317.3%0.0%9.6%.308.503.387.19513.5%35.1%54%54%27%14%46%18%54%46% 4.1 0.0 0.0 0.0 0.0 0.0
20244064-276.04.141.4117.9%0.0%7.7%.262.410.322.1486.1%34.1%43%52%24%19%52%14%48%38% 5.0 1.8 12.8 1.7 2.4 4.7
20236014-484.12.881.4322.3%0.0%8.4%.245.370.302.1266.4%30.3%41%51%24%18%49%18%51%46% 6.6 3.3 1.3 5.4 2.8 5.1
202215145-770.15.891.6013.9%0.0%8.5%.272.433.338.1629.9%30.5%46%53%23%19%51%12%49%34% 0.0 1.4 16.1 6.6 3.7 7.4


2025 Splits vs LHB vs RHB
Pitch Type MPH SPIN Whiff% Usage xBAVG xWOBA K% BB% xSLG ISO HR Usage xBAVG xWOBA K% BB% xSLG ISO HR
4-SeamerFastball MPH0%42%.318.35328.614.3.356.167031%.349.45320.00.0.725.0000
CutterFastball89.6 MPH222330%23%.402.4190.00.0.832.000032%.199.36212.525.0.396.1670
SliderBreaking86.2 MPH233318%14%.002.23233.333.3.002.000018%.377.4220.00.0.608.0000
ChangeupOffspeed91.8 MPH176221%20%.467.42425.00.0.491.000019%.351.49725.00.0.739.0000
2024 Splits vs LHB vs RHB
Pitch Type MPH SPIN Whiff% Usage xBAVG xWOBA K% BB% xSLG ISO HR Usage xBAVG xWOBA K% BB% xSLG ISO HR
4-SeamerFastball MPH0%10%.167.15753.80.0.188.00005%.192.19140.00.0.252.0000
CutterFastball90.4 MPH218723%55%.301.37116.94.6.494.241451%.305.38213.210.5.505.2422
SliderBreaking85.2 MPH236232%8%.138.25740.010.0.190.000037%.199.21517.23.4.252.0710
ChangeupOffspeed91.4 MPH16928%27%.302.3225.45.4.411.12117%.178.1709.10.0.200.0910
2023 Splits vs LHB vs RHB
Pitch Type MPH SPIN Whiff% Usage xBAVG xWOBA K% BB% xSLG ISO HR Usage xBAVG xWOBA K% BB% xSLG ISO HR
4-SeamerFastball MPH35%7%.125.13350.00.0.188.25004%.231.23153.80.0.308.5000
CutterFastball89.0 MPH219633%39%.250.27525.01.9.323.061126%.208.26726.312.3.266.0600
SinkerFastball96.3 MPH205219%26%.276.31618.410.5.353.088046%.302.39410.39.3.550.2877
SliderBreaking85.9 MPH229731%17%.196.24233.39.5.251.105022%.250.30123.87.1.383.1031
ChangeupOffspeed93.0 MPH16758%11%.185.20114.34.8.217.00002%.197.25428.614.3.218.0000

Splits vs LHB vs RHB
Year PA xBAVG xWOBA xSLG ISO K% BB% HR PA xBAVG xWOBA xSLG ISO K% BB% HR
2025 20.353.378.464.05920.0%10.0%032.281.392.526.03715.6%9.4%0
2024 162.271.336.433.16719.8%6.8%6171.253.308.389.13616.4%7.0%4
2023 148.234.268.314.06525.7%5.4%1216.253.323.410.16920.4%9.3%8
2022 154.268.343.439.20413.6%9.7%6161.275.333.427.17814.3%6.8%4
  Home Road
Season PA xAVG xWOBA K% BB% xSLG ISO HR PA xAVG xWOBA K% BB% xSLG ISO HR
202534.309.38314.7%8.8%.470.034018.307.39422.2%11.1%.569.0670
2024199.256.30315.6%6.5%.367.1245134.271.35021.6%7.5%.475.1925
2023187.262.31020.3%6.4%.388.1275177.226.29024.9%9.0%.351.1254
2022185.279.35510.8%9.7%.452.2206130.263.31418.5%6.2%.408.1514

Split Games Wind 0-9 mph+ Wind 10+ mph Humid 0-25 Humid 25-50 Humid 50-75 Humid 75-100 Temp 0-40 Temp 40-60 Temp 61-79 Temp 80+
Road 5.28 3.49 6.68 4.95 4.56 4.14 10.15 0.00 5.65 7.14 2.08
Home 3.69 4.15 2.96 4.55 2.69 5.32 2.02 0.00 2.47 3.94 3.62