Season Schedule
OffSTRegASGRegPostWSOff
Road to Playoffs
Open board →
Playoff odds, bubble teams & races — 30 clubs
5in the bubble
Sean Sullivan
#
57
Team
COL · P
Debut
2026 · 1st MLB season

Sean Sullivan

Age 24
Contract Value $140,494/yr
Size 6' 4" · 200
Throws LHP
Bats Right
From Boston, MA
0-3 W-L
8.87
ERA
2.01
WHIP
6.5
K/9
4.4
BB/9
22.1
Innings
5
Starts
Sean Sullivan season snapshot
Season stats
ERA
8.87
WHIP
2.01
K/9
6.5
BB/9
4.4
HR/9
2.01
IP
22.1
GS
5
W-L
0-3
◆ Pitcher snapshot

Sean Sullivan, a starter for the Colorado Rockies, has worked through a difficult opening stretch while trying to settle into a regular major league role. The L-hander enters this snapshot with a 8.87 ERA, a 2.01 WHIP, and 6.45 strikeouts per nine across 22.1 innings in 5 starts, with a 0-3 record. The overall line points to traffic on the bases and frequent pressure situations, but it also reflects a pitcher still searching for consistency from outing to outing.

His profile suggests a lefty who needs sharper command and better sequencing to keep counts under control. The 4.43 walk rate has made it harder to work efficiently, and when he falls behind, hitters have been able to force mistakes or extend innings. Even so, there is still room for improvement if he can locate earlier in counts, lean into his strengths, and avoid letting one rough frame turn into a bigger spiral.

Recent form:

Recent starts
  • 07/045.2 IP · 6 ER · 4 K
  • 06/294.2 IP · 5 ER · 5 K
  • 06/235.0 IP · 3 ER · 3 K
  • 06/174.0 IP · 8 ER · 2 K
  • 06/123.0 IP · 0 ER · 2 K

Sean Sullivan has pitched to a up trend lately, though the results still show some volatility from start to start. There have been stretches where he has looked capable of navigating a lineup, but sustaining that over multiple turns remains the key question. For now, recent outings have been more about damage control and finding a workable rhythm than fully turning the corner.

From a fantasy and evaluation standpoint, the workload is there, but the risk remains elevated until the command stabilizes and the run prevention improves.

Sean Sullivan ERA trend
Last 6
Earned runs per start
Avg 4.4 ER / start
⚡ Alternating good/bad starts — volatile pattern.

Sean Sullivan game log

2026 season
DateOpponentIPHERKBBERA
Jul 4San Francisco Giants5.21264210.38
Jun 29Miami Marlins4.2655210.71
Jun 23Boston Red Sox553355.40
Jun 17Chicago Cubs4982218.00
Jun 12Athletics320200.00

Sean Sullivan season splits

Home / away / vs L-R · 2026
vs Right AVG
AVG0.333
Home ERA
ERA8.22
Away ERA
ERA10.29
vs Left AVG
AVG0.364
Sean Sullivan monthly splits
ERA · IP · K · BB · WHIP per month
MonthGSERAIPKBBWHIP
Jun48.6416.21291.86
Jul19.535.2422.47
Pitch arsenal
Usage and average velocity · 2026
FFFour-seam FB
45.9%87.6 mph
STSweeper
17.5%75.4 mph
CHChangeup
15.8%77.1 mph
FCCutter
15.0%82.7 mph
SISinker
5.8%86.6 mph

Performance vs teams

2026 starts · sorted by ERA

Hot / Cold zones

Opponent results by strike zone area

AVG by zone

  • Zone 01: .500
  • Zone 02: .273
  • Zone 03: .667
  • Zone 04: .471
  • Zone 05: .333
  • Zone 06: .364
  • Zone 07: .429
  • Zone 08: .143
  • Zone 09: .333
  • Zone 11: .000
  • Zone 12: .125
  • Zone 13: .200
  • Zone 14: .500

OPS by zone

  • Zone 01: 1.000
  • Zone 02: .727
  • Zone 03: 2.667
  • Zone 04: 1.222
  • Zone 05: 1.067
  • Zone 06: 1.000
  • Zone 07: 1.286
  • Zone 08: .429
  • Zone 09: .667
  • Zone 11: .571
  • Zone 12: .455
  • Zone 13: .800
  • Zone 14: 1.600

SLG by zone

  • Zone 01: .500
  • Zone 02: .455
  • Zone 03: 2.000
  • Zone 04: .824
  • Zone 05: .733
  • Zone 06: .636
  • Zone 07: .857
  • Zone 08: .286
  • Zone 09: .333
  • Zone 11: .000
  • Zone 12: .125
  • Zone 13: .400
  • Zone 14: 1.250

OBP by zone

  • Zone 01: .667
  • Zone 02: .273
  • Zone 03: .667
  • Zone 04: .444
  • Zone 05: .333
  • Zone 06: .364
  • Zone 07: .429
  • Zone 08: .143
  • Zone 09: .333
  • Zone 11: .571
  • Zone 12: .364
  • Zone 13: .600
  • Zone 14: .600

numberOfStrikes by zone

  • Zone 01: 10.00
  • Zone 02: 14.00
  • Zone 03: 13.00
  • Zone 04: 20.00
  • Zone 05: 24.00
  • Zone 06: 19.00
  • Zone 07: 20.00
  • Zone 08: 14.00
  • Zone 09: 9.00
  • Zone 11: 13.00
  • Zone 12: 13.00
  • Zone 13: 12.00
  • Zone 14: 6.00

earnedRunAverage by zone

  • Zone 01: -
  • Zone 02: -
  • Zone 03: -
  • Zone 04: -
  • Zone 05: -
  • Zone 06: -
  • Zone 07: -
  • Zone 08: -
  • Zone 09: -
  • Zone 11: -
  • Zone 12: -
  • Zone 13: -
  • Zone 14: -

numberOfPitches by zone

  • Zone 01: 13.00
  • Zone 02: 26.00
  • Zone 03: 19.00
  • Zone 04: 36.00
  • Zone 05: 39.00
  • Zone 06: 28.00
  • Zone 07: 28.00
  • Zone 08: 20.00
  • Zone 09: 11.00
  • Zone 11: 33.00
  • Zone 12: 58.00
  • Zone 13: 80.00
  • Zone 14: 21.00
0.4000.3000.200
.200.000.125.500.500.273.667.471.333.364.429.143.333
0.4000.3000.200

Last 10 matchups

More MLB pitcher profiles

Similar starters by ERA and workload — refreshed on each visit.