RunsLeft › Pitchers › Zack Kelly
Relief Pitcher · Boston Red Sox

Zack Kelly

RHP · Throws Right · Age 31Reliever
ERA
3.31
FIP
–
IP
16.1
W-L
0-2
WHIP
1.29
K%
19.7
BB%
9.9
GB%
–
K/9
7.7
HR/9
0.6
He was signed by the Boston Red Sox as an amateur free agent in January 2021. He made his MLB debut on August 29, 2022.Facts: MLB StatsAPI (people · transactions)
No scheduled start today. The model projection and lineup matchup appear on start days.

Cutter

FC · lead pitch

33% of pitches · .375 xwOBA allowed · 135 BIP · where it goes, what it costs

Pitcher Locations
where he throws it · catcher’s view
2%2%1%1%1%5%4%5%4%2%3%8%13%16%9%0%2%4%3%3%0%1%3%5%4%
Rare 0% · Common 10% · Very common 20%+
xwOBA Allowed
damage done by zone · all batters
––.501–.691.253.114.454.292.722.397.284.357.401.327––.406.279––.000.625.537.345
Cold .200 · Avg .310 · Hot .500+
Expected Damage
locations × damage zones
––.007–.003.011.005.023.012.013.011.022.046.065.028––.017.009––.000.018.024.012
Low risk · Average · High-risk zone
Cutter (33% usage) has allowed .375 xwOBA over 135 balls in play — his most-used pitch.

Arsenal

usage × whiff, ranked

7 pitch types · 1,877-pitch sample · 2026/2025/2024 blend, weighted 4/3/1

Cutter FC
33% usage · 18% whiff · .375 xwOBA · 90.7 mph
Sweeper ST
22% usage · 27% whiff · .199 xwOBA · 81.7 mph
Four-Seam Fastball FF
20% usage · 18% whiff · .350 xwOBA · 96.1 mph
Sinker SI
12% usage · 10% whiff · .374 xwOBA · 95.9 mph
Changeup CH
11% usage · 29% whiff · .253 xwOBA
Unknown UN
1% usage
Curveball CU
1% usage · .154 xwOBA
Whiff% Trend
last 8 outings · by pitch · min 5 swings per point
010203040504/285/15/35/65/105/125/145/19
CutterSweeperFour-Seam Fastball
Hand Splits
K% + xwOBA allowed by batter side · 2026/2025/2024 blend, weighted 4/3/1
SplitK%xwOBASample
vs. LHB19.9 .308 192
vs. RHB23.3 .327 264
Live · client-hydrated

Market lines

current pick’em lines by book · updates through the day

Live lines load in your browser.
Live · client-hydrated

DFS picks

today’s picks for this pitcher, probability-sorted · graded nightly

Today’s picks load in your browser.