Jack Flaherty
DET · P
Strikeout specialist: 35.7% K rate, 26.6% whiff, 4.6 IP/start.
Everything you need to know about Jack Flaherty before you bet. His whiff rate is 26% — right around league average. He throws his fastball at 93.4 mph. Compare odds across 8 sportsbooks for every prop market below.
Compared to other strikeout specialists
Highest K Rate among strikeout specialists this season. Top 8.
| # | Player | Team | K Rate |
|---|---|---|---|
| 1 | David Peterson | CHC | 48.4% |
| 2 | Andrew Alvarez | WSH | 43.3% |
| 3 | Ian Seymour | TB | 36.1% |
| 4 | Jack Flahertyyou are here | DET | 35.7% |
| 5 | Logan Henderson | MIL | 31.0% |
| 6 | Christian Scott | NYM | 30.5% |
| 7 | Brandon Sproat | MIL | 30.3% |
| 8 | Jared Jones | PIT | 28.3% |
How is Jack Flaherty performing?
Jack Flaherty is a strikeout specialist built on pure stuff. Across 16 starts, he's struck out 35.7% of batters faced with a 26.6% whiff rate, showing consistent bat-missing ability. The constraint is length: he's averaging 4.6 innings per start, which caps his total strikeout volume per outing despite the high per-batter rate. The profile works best in shorter stints or high-leverage situations.
Performance summary as of week of July 13, 2026
Whiff Rate
26%
League average
K Over Rate
60%
6 of 10 games
Fastball Velo
93.4 mph
Average
Outs Over Rate
30%
Bottom 2%3 of 10 games
Whiff Rate — How often batters swing and miss at his pitches. Higher = more strikeout upside. League average is ~25%.
K Over Rate — How often he goes over his strikeout line. Shows how reliable he is for K props.
Fastball Velo — Average speed of his fastball. Harder throwers tend to generate more swings and misses.
Outs Over Rate — How often he goes over his outs recorded line. Higher = he pitches deeper into games.
Tonight's prop markets
These are the prop bets available for Jack Flaherty. Each card shows the over rate and game count. Click any market to compare odds across 8 sportsbooks.
Keep researching Jack Flaherty
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How has Jack Flaherty been pitching lately?
These are Jack Flaherty's Statcast numbers — the advanced metrics that predict prop outcomes. Green values mean he's well above the league average.
Whiff Rate
26%
Swing-and-miss rate · avg ~25%
Chase Rate
31.2%
Chases outside zone · avg ~30%
Fastball Velo
93.4mph
Average heater speed · avg ~93.5
CSW Rate
26.6%
Called strikes + whiffs · avg ~28%
What pitches does Jack Flaherty throw?
Jack Flaherty's pitch mix — how often he throws each type.
How has Jack Flaherty been pitching recently?
Each bar shows strikeouts per start. The gold dashed line is the most recent posted strikeouts line (5.5). He went over 3 of 5 times against this line.
Our model has analyzed Jack Flaherty's matchup.
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Sign up freeFrequently Asked Questions
What are Jack Flaherty's prop odds tonight?▾
Jack Flaherty (DET) typically has three pitcher prop markets posted before each start: strikeouts, outs recorded, and earned runs. Each prop page on OddsGuy compares the live line and price across 8 sportsbooks (DraftKings, FanDuel, BetMGM, Caesars, BetRivers, Fanatics, Bovada, and Pinnacle) and highlights the best price in gold.
What is Jack Flaherty's pitching style?▾
Jack Flaherty throws fastballs about 51.2% of the time, breaking balls 46.3%, and offspeed pitches 2.5%. His whiff rate is 26% — close to the ~25% league average. Fastball velocity sits at 93.4 mph. Called-strike-plus-whiff rate is 26.6%.
How has Jack Flaherty been performing recently?▾
Over his last 10 starts, Jack Flaherty has gone over his outs-recorded line 30% of the time, over his earned-runs line — of the time. Each prop page above shows the full game-by-game line history with actual outcomes.
Where can I bet on Jack Flaherty props?▾
Jack Flaherty props are posted at the major US sportsbooks — DraftKings, FanDuel, BetMGM, Caesars, BetRivers, Fanatics — and offshore at Pinnacle and Bovada. Each prop page on OddsGuy shows current pricing across all 8 books so you can shop for the best number before betting.
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Tonight's Games
Stats & Leaderboards
Jack Flaherty — DET P Whiff rate: 26% (league avg ~25%) Fastball velocity: 93.4 mph Pitch mix: 51.2% fastball, 46.3% breaking, 2.5% offspeed Outs over rate: 30% (last 10 games) Earned runs over rate: — (last 10 games)