BIGLEAGUE

Detroit Tigers · Pitcher · #9

Jack Flaherty

Age 316' 4" · 225lbBats R · Throws RDebut 2017From Burbank

ERA

4.48

W-L

3-8

K

103

WHIP

1.39

WAR

1.3

FIP

4.05

Awards

4 major honors

World Series Championship

2024

All-MLB Second Team

2019

NL Pitcher of the Month ×2

2019

League Percentile

2026 season · percentile vs 46 qualified pitchers
ERA
13
4.48
WHIP
9
1.39
Strikeouts
0
103
K/9
80
10.49
Wins
0
3
Bottom of leagueAverage (50)Top of league

⚠ Below the qualified innings threshold. Percentiles are for reference only.

the entire league · by ERA

Top 87%

Jack Flaherty's ERA (4.48) ranks below average among 46 qualified pitchers. The number on each bar is a percentile (higher is better); use the tabs to change the comparison pool.

PITCHING

Season · Career
CategoryGamesERAWinsLossesSavesInningsStrikeoutsWalksWHIP
2026 Season204.4838088.1103421.39
Career2103.85666401079.012333931.21

Hover over a stat for its definition.

ARSENAL

Pitch arsenal · 2026 usage and average velocity
Four-Seam49.2%avg 149 km/h
Slider24.3%avg 137 km/h
Knuckle Curve19.4%avg 126 km/h
Sinker4.4%avg 146 km/h
Changeup2.7%avg 138 km/h

ADVANCED

Advanced metrics · 2026 season

BABIP

.303

K/9

10.49

BB/9

4.28

HR/9

1.12

Quality starts

2

Whiff%

27.1%

GAME LOG

Last 10 games · includes team result
DateOppInningsHitsERWalksStrikeoutsTeam
09.27vs PIT2.01001L
07.20@ CHC4.04324W
07.10vs PHI6.02236W
07.04@ TEX5.23005W
06.28vs HOU5.02039L
06.12@ CLE3.03211L
06.07vs SEA5.06317W
06.02@ TB5.05026W
05.28vs LAA5.26319L
05.22@ BAL3.18307L

SPLITS

Situational splits (2026)

Home

Opp AVG.199
IP48.1
K63
WHIP1.12

Away

Opp AVG.279
IP40.0
K40
WHIP1.73

vs LHP

Opp AVG.230
IP48.1
K50
WHIP1.47

vs RHP

Opp AVG.247
IP40.0
K53
WHIP1.30

RISP

Opp AVG.225
IP24.2
K25
WHIP1.26

YEAR BY YEAR

Year-by-year · Career trends

ERALower is better

▼ Trending up year over year
ERA by yearFrom 6.33 in 2017 to 4.48 in 2026. Lower is better for this stat.2017 ERA: 6.336.3320172018 ERA: 3.3420182019 ERA: 2.752.7520192020 ERA: 4.9120202021 ERA: 3.2220212022 ERA: 4.2520222023 ERA: 4.9920232024 ERA: 3.1720242025 ERA: 4.6420252026 ERA: 4.484.482026
Show yearly figures
ERA year-by-year details
YearERA
20176.33
20183.34
20192.75
20204.91
20213.22
20224.25
20234.99
20243.17
20254.64
20264.48

WHIPLower is better

▲ Trending down year over year
WHIP by yearFrom 1.55 in 2017 to 1.39 in 2026. Lower is better for this stat.2017 WHIP: 1.551.5520172018 WHIP: 1.1120182019 WHIP: 0.970.9720192020 WHIP: 1.2120202021 WHIP: 1.0620212022 WHIP: 1.611.6120222023 WHIP: 1.5820232024 WHIP: 1.0720242025 WHIP: 1.2820252026 WHIP: 1.391.392026
Show yearly figures
WHIP year-by-year details
YearWHIP
20171.55
20181.11
20190.97
20201.21
20211.06
20221.61
20231.58
20241.07
20251.28
20261.39

Strikeouts

▼ Trending down year over year
Strikeouts by yearFrom 20 in 2017 to 103 in 2026.2017 Strikeouts: 202020172018 Strikeouts: 18220182019 Strikeouts: 23123120192020 Strikeouts: 4920202021 Strikeouts: 8520212022 Strikeouts: 3320222023 Strikeouts: 14820232024 Strikeouts: 19420242025 Strikeouts: 18820252026 Strikeouts: 1031032026
Show yearly figures
Strikeouts year-by-year details
YearStrikeouts
201720
2018182
2019231
202049
202185
202233
2023148
2024194
2025188
2026103
YearTeamGamesERAWinsLossesSavesInningsStrikeoutsWalksWHIP
2017STL66.3302021.120101.55
2018STL283.34890151.0182591.11
2019STL332.751180196.1231550.97
2020STL94.9143040.149161.21
2021STL173.2292078.185261.06
2022STL94.2521036.033221.61
2023STL204.43760109.2106541.55
2023BAL96.7513034.242121.67
2023—294.99890144.1148661.58
2024DET182.95750106.2133190.96
2024LAD103.5862055.161191.28
2024—283.171370162.0194381.07
2025DET314.648150161.0188591.28
2026DET204.4838088.1103421.39