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Sean Sullivan

#45 - Starting Pitcher

Colorado Rockies

Bats / Throws Right / Left
Date of Birth 7/22/2002 (23)
Height, Weight 6'4", 190 lb
Hometown Boston, MA

2026 Season Stats

Needs more playing time to qualify
MLB Rank MLB Average
W-L IP ERA WHIP K% BB%
0-0 3.0 0.00 0.67 16.7% 0.0%
187th 3
W
202nd 54.0
IP
1st 4.49
ERA
1st 1.32
WHIP
160th 21.6%
K%
1st 8.9%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
87.6 10.2% 18.4% 63.3% 4.1% 5.21 2.51
201st 94.4
FB MPH
137th 11.5%
SwStr%
202nd 27.8%
CSW%
1st 49.9%
Str-ICR
66th 4.8%
MTK%
13th 4.98
PLV
16th 3.34
PLA

Articles

5/23/2026The Stash List Week 9: Top 10 Pitching Prospects to Stash in 2026John Villavicencio

3/13/2026Daily Starting Pitcher News And Spring SP Roundup - 3-13-26Nick Pollack

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11/10/2025Dynasty Time Machine: The Surprise League Winners for 2026John Villavicencio

7/12/2025The Stash List Week 16: Top 10 Pitching Prospects to Stash in 2025John Villavicencio

See More Articles
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Sean Sullivan Overview

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team G GS IP W-L QS ERA WHIP xERA FIP xFIP PLA K% BB% H/9 HR/9 BABIP HR/FB% LOB% ICR GB% SwStr% CSW% IPR PLV
2026 COL 1 1 3.0 0-0 0 0.00 0.67 1.05 2.77 2.77 2.51 16.7% 0.0% 6.0 0.00 .222 - 100.0% 11.1% 28.6% 10.2% 18.4% 0.35 5.21
SP MLB Percentile 0 0 0 0-95 0 100 100 99 90 96 92 19 100 95 97 95 - 100 100 1 30 0 11 92
SP MLB AVG 11 10 54.0 3-3 3 4.49 1.32 4.40 4.40 4.26 3.34 21.6% 8.9% 8.5 1.25 .287 19.0% 72.2% 38.7% 43.1% 11.5% 27.8% 0.47 4.98
Career 1 1 3.0 0-0 0 0.00 0.67 1.05 2.77 2.77 2.51 16.7% 0.0% 6.0 0.00 .222 - 100.0% 11.1% 28.6% 10.2% 18.4% 0.35 5.21

Sean Sullivan Repertoire

2026 All
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Sean Sullivan Game Log

Sean Sullivan Standard

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Year Team G GS IP W-L QS Sv Hld P Strikes Balls TBF H 1B 2B 3B HR K BB HB WP
2026 COL 1 1 3.0 0-0 0 0 0 49 33 16 12 2 1 1 0 0 2 0 1 0
SP MLB Percentile 0 0 0 0-95 0 0 0 0 0 100 0 100 100 97 52 97 0 100 59 66
SP MLB AVG 11 10 54.0 3-3 3 0 0 905 577 329 233 51 33 10 1 7 51 20 2 1
Career 1 1 3.0 0-0 0 0 0 49 33 16 12 2 1 1 0 0 2 0 1 0

Sean Sullivan Advanced

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Year Team K% BB% AVG SLG OPS wOBA BABIP BACON xAVG xwOBA xBABIP xwoBACON EV FB EV LA xERA
2026 COL 16.7% 0.0% .182 .273 .523 .242 .222 .222 .119 .195 .152 .174 83.0 - 37.3 1.05
SP MLB Percentile 19 100 96 96 96 95 95 99 99 99 100 100 99 - 0 99
SP MLB AVG 21.6% 8.9% .245 .408 .727 .322 .287 .320 .245 .328 .284 .376 88.6 90.1 13.9 4.40
Career 16.7% 0.0% .182 .273 .523 .242 .222 .222 .119 .195 .152 .174 83.0 - 37.3 1.05

Sean Sullivan Pitch › Mix

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Year Team FF% (MPH) SI% (MPH) FC% (MPH) SL% (MPH) ST% (MPH) CB% (MPH) CH% (MPH) FS% (MPH) KN% (MPH) Fastball% Secondary%
2026 COL 57.1% (87.6) - 16.3% (83.2) - 10.2% (75.6) - 14.3% (77.9) - - 57.1% 40.8%
SP MLB Percentile 97 (0) - 56 (1) - 27 (1) - 44 (1) - - 88.6% 8.4%
SP MLB AVG 33.5% (94.4) 20.1% (93.7) 16.4% (89.2) 18.3% (86.1) 16.3% (82.4) 14.3% (80.1) 16.7% (86.4) 17.9% (86.6) 27.6% (80.5) 46.8% 53.1%
Career 57.1% (87.6) - 16.3% (83.2) - 10.2% (-) - 14.3% (77.9) - - 57.1% 40.8%

Sean Sullivan Pitch › Results

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Year Team FF CSW% SI CSW% FC CSW% SL CSW% ST CSW% CB CSW% CH CSW% FS CSW% KN CSW% Fastball CSW% Secondary CSW%
2026 COL 21.4% (3) - 12.5% (1) - 40.0% (1) - 0.0% (0) - - 21.4% 15.0%
SP MLB Percentile 10 (1) - 1 (4) - 95 (2) - 0 (0) - - 4.0% 0.0%
SP MLB AVG 27.0% (29) 26.6% (10) 26.8% (14) 29.2% (21) 28.3% (16) 29.6% (15) 23.3% (20) 21.7% (25) 27.3% (11) 27.4% 28.0%
Career 21.4% (3) - 12.5% (1) - 40.0% (1) - 0.0% (0) - - 21.4% 15.0%

Sean Sullivan Batted Ball › Contact

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Year Team GB% LD% FB% PU% SS% Pull% Cent% Oppo% Foul Str% PC% Fl&B% Solid% Brl% ICR
2026 COL 28.6% 14.3% 0.0% 57.1% 14.3% 33.3% 22.2% 44.4% 30.6% 85.7% 0.0% 14.3% 0.0% 11.1%
SP MLB Percentile 1 99 0 100 100 5 1 100 100 100 100 1 99 100
SP MLB AVG 43.1% 22.2% 24.3% 10.4% 35.6% 42.4% 33.0% 24.6% 18.1% 61.1% 24.5% 6.3% 8.1% 38.7%
Career 28.6% 14.3% 0.0% 57.1% 14.3% 33.3% 22.2% 44.4% 30.6% 85.7% 0.0% 14.3% 0.0% 11.1%

Sean Sullivan Batted Ball › Outcomes

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Year Team AVG wOBA BABIP BACON xAVG xwOBA xBABIP xwoBACON EV FB EV LA HR/FB ICR IPA%
2026 COL .182 .242 .222 .222 .119 .195 .152 .174 83.0 - 37.3 - 11.1% 8.3%
SP MLB Percentile 96 95 95 99 99 99 100 100 99 - 0 - 100 100
SP MLB AVG .245 .322 .287 .320 .245 .328 .284 .376 88.6 90.1 13.9 19.0% 38.7% 26.5%
Career .182 .242 .222 .222 .119 .195 .152 .174 83.0 - 37.3 - 11.1% 8.3%

Sean Sullivan Approach › Plate Discipline

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Year Team Zone% Str% Swing% O-Sw% Whiff% Foul Str% Con% Z-Con% O-Con% CS% SwStr% CSW% BIP% PLUS% IPR Str-ICR
2026 COL 44.9% 67.3% 59.2% 33.3% 17.2% 30.6% 82.8% 89.5% 66.7% 8.2% 10.2% 18.4% 18.4% 63.3% 0.35 63.3%
SP MLB Percentile 49 91 100 80 6 100 6 11 18 0 30 0 61 97 11 100
SP MLB AVG 44.9% 63.5% 47.3% 31.4% 24.3% 18.1% 75.7% 85.0% 59.7% 16.3% 11.5% 27.8% 17.7% 57.9% 0.47 49.9%
Career 44.9% 67.3% 59.2% 33.3% 17.2% 30.6% 82.8% 89.5% 66.7% 8.2% 10.2% 18.4% 18.4% 63.3% 0.35 63.3%

Sean Sullivan Approach › Locations

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Year Team Zone% aLoc% x-mLoc% gLoc% hiLoc% y-mLoc% loLoc% iLoc% oLoc% mmLoc%
2026 COL 44.9% 27.1% 33.3% 39.6% 47.9% 27.1% 25.0% 39.6% 27.1% 8.3%
SP MLB Percentile 49 9 2 66 96 3 1 99 0 94
SP MLB AVG 44.9% 35.6% 27.5% 36.8% 35.5% 22.7% 41.8% 29.2% 43.3% 6.6%
Career 44.9% 27.1% 33.3% 39.6% 47.9% 27.1% 25.0% 39.6% 27.1% 8.3%

Sean Sullivan Approach › Counts

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Year Team Early% Behind% 2-Str% Early BIP% F-Str% TF-Str% ECS% 2-Str O-Sw% PAR%
2026 COL 55.1% 14.3% 30.6% 14.8% 58.3% 50.0% 11.1% 33.3% 13.3%
SP MLB Percentile 5 15 74 45 26 50 0 94 7
SP MLB AVG 58.7% 12.2% 29.2% 15.0% 61.0% 49.6% 20.9% 26.7% 18.9%
Career 55.1% 14.3% 30.6% 14.8% 58.3% 50.0% 11.1% 33.3% 13.3%

Sean Sullivan PLV

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team P PLV QP% AP% BP% Q-BP% MTK% HP HL PLA
2026 COL 49 5.21 49.0% 16.3% 34.7% 14.3% 4.1% -0.4 -1 2.51
SP MLB Percentile 0 92 81 33 69 69 65 63 59 92
SP MLB AVG 905 4.98 46.4% 17.5% 36.1% 10.2% 4.8% 2.9 +1 3.34
Career 49 5.21 49.0% 16.3% 34.7% 14.3% 4.1% -0.4 -1 2.51
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