Jack Flaherty

SP · R/R · age 30.9 · DET

XIX-AXX-B FAOCTOBER OK

Roster status
15-DAY IL (Flexor inflammation)
Service thru 2025
8+006
Service now / projected
9+006 / 9+006
Option years left (2026)
2
Assignments left this season
5 of 5
Contract (2027)
FREE AGENT
Acquired
Free Agent (LAD) Feb'25
Outrighted / DFA'd before
0 / 0
Contract
2 yr, $35M (2025-26); valley charge raises base AAV for 2025, lowers for 2026.

Next 90 days, by the model

Stays put
98%
Designated
<1%
Optioned
<1%
Traded
2%
Released or non-tendered
<1%

Pushing the cut risk around: this season's WAR (1.31) lowers it, last season's WAR (2.61) lowers it, age (30.92) raises it.

Context the model does not weigh: ZiPS projects 2.2 WAR, 1.3 WAR this season; 13 SP on the 40-man, of whom Jack Flaherty, Justin Verlander are headed to free agency.

Trained on every 40-man roster snapshot since 2011 and what happened in the following 90 days; it sees roster status, options, service, history and last season's line, not this season's performance or the club's intentions. How well it does.

Is there a job for him next year?

DET returns 11 SP on the 40-man once 2 free agents leave; about 8 SP jobs survive a normal winter. By his own recent record he ranks 12th among the returners (2.0 WAR against a bar of 0.4), which the calibrated model turns into 100% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 12th (2.4 WAR, bar 0.4), worth 100% kept on the same model.

By recent record: returning SPProj. WAR
1. Framber Valdez2.0
2. Reese Olson2.0
3. Troy Melton1.3
4. Keider Montero1.2
5. Ty Madden0.8
6. Drew Anderson0.6
7. River Ryan0.4
8. Andrew W. Searslast job0.4
9. Jackson Jobe0.3
10. Jake Miller0.0
11. Sawyer Gipson-0.4
By ZiPS / Steamer: returning SPProj. WAR
1. Framber Valdez3.4
2. Drew Anderson1.5
3. Reese Olson0.9
4. Troy Melton0.9
5. Sawyer Gipson0.6
6. Keider Montero0.6
7. River Ryan0.4
8. Ty Maddenlast job0.4
9. Andrew W. Sears0.2
10. Jake Miller0.1
11. Jackson Jobe0.1

Departing free agents are excluded; players on club, mutual or player options are counted as returning. The kept probability is calibrated on every September since 2012 using the recent-record projection; the ZiPS/Steamer reading uses the same model with a different ranking, so treat it as a second opinion rather than a calibrated number. Salary enters once arbitration projections publish in October.

October: Post-season eligible

On the 40-man before noon ET Sep 1. He stays eligible as long as he remains on the 40-man or 60-day IL through the post-season; an outright after the cutoff would end automatic eligibility.

The post-season eligibility list is fixed at noon ET on September 1: everyone on the 40-man, the 60-day IL or the military list at that moment, who then stays there without interruption. Attachment 25 (Major League Rule 40)

What happens if the club…

option him to the minorsBLOCKED
Not without his consent: with five years of service he can refuse the assignment or elect free agency instead. The club's only unilateral moves are to keep him, trade him, or release him.
Article XIX-A: five years, no forced assignment
designate him for assignment (or put him on outright waivers)
The club has 7 days to trade him, pass him through outright waivers, or release him; he is paid at the major-league rate and keeps accruing service in the meantime. On outright waivers any club can claim him for $50,000, worst record first, and the claiming club takes his contract (2 yr, $35M (2025-26); valley charge raises base AAV for 2025, lowers for 2026.). If he clears, he cannot be outrighted without his consent: he can refuse and force a release with his contract intact, or elect free agency (forfeiting termination pay). Post-season: an outright after the September 1 cutoff ends his automatic eligibility. He could only return as an approved injury replacement, and only if he accepts the outright and stays on a minor-league reserve list in the organization without interruption; a release makes him ineligible for anyone this October. Because he is on the injured list he cannot be outrighted until he is healthy and reinstated, so a DFA now would have to end in a trade or a release. With real money left on the contract a claim is unlikely; the usual outcome is clearing waivers, then release, with the club paying the balance less what a new club pays him.
Designated for assignment: 7 days · Outright waivers · Article XIX-A: five years, no forced outright
release him
Release waivers cost a claiming club $1 but the claimant assumes the whole contract, so expensive players clear. The club owes the full unpaid balance of this season's salary, offset by whatever another club pays him this year. A released player is not post-season eligible for any club this year.
Release waivers and termination pay · Which rate a split contract pays at release
trade himBLOCKED
Not now: players on major-league contracts cannot be traded after the Aug 3 deadline until the day after the World Series.
Trade deadline · 10-and-5 rights · June 15 no-trade for free-agent signees
Let the season end
He becomes an Article XX-B free agent at 9 AM ET the day after the World Series; only the club can talk to him for five days after that. A qualifying offer is possible only if he has been with the club since Opening Day and never received one before.
Article XX-B free agency · Qualifying offer

What the rules say about him

Option years, season by season

SeasonDays on optionOption year usedStints
201840yesMar 18, 2018 to Mar 28, 2018 (0d, spring training)Apr 4, 2018 to Apr 28, 2018 (24d)Apr 29, 2018 to May 15, 2018 (16d)

Transaction log

Jul 21, 2026Status changeDetroit Tigers placed RHP Jack Flaherty on the 15-day injured list. Right flexor inflammation.
Jun 28, 2026Status changeDetroit Tigers activated RHP Jack Flaherty from the 15-day injured list.
Jun 13, 2026Status changeDetroit Tigers placed RHP Jack Flaherty on the 15-day injured list. Left peroneal strain.
Feb 7, 2025Signed as free agentDetroit Tigers signed free agent RHP Jack Flaherty.
Feb 7, 2025Status changeDetroit Tigers activated RHP Jack Flaherty.
Oct 31, 2024Declared free agentRHP Jack Flaherty elected free agency.
Jul 31, 2024Status changeLos Angeles Dodgers activated RHP Jack Flaherty.
Jul 30, 2024TradedDetroit Tigers traded RHP Jack Flaherty to Los Angeles Dodgers for C Thayron Liranzo and SS Trey Sweeney.
Dec 20, 2023Signed as free agentDetroit Tigers signed free agent RHP Jack Flaherty.
Nov 2, 2023Declared free agentRHP Jack Flaherty elected free agency.
Aug 2, 2023Status changeBaltimore Orioles activated RHP Jack Flaherty.
Aug 1, 2023TradedSt. Louis Cardinals traded RHP Jack Flaherty to Baltimore Orioles for 2B César Prieto, LHP Drew Rom and RHP Zack Showalter.
Sep 5, 2022Status changeSt. Louis Cardinals activated RHP Jack Flaherty from the 60-day injured list.
Jul 11, 2022Status changeSt. Louis Cardinals transferred RHP Jack Flaherty from the 15-day injured list to the 60-day injured list. Right shoulder strain.
Jun 27, 2022Status changeSt. Louis Cardinals placed RHP Jack Flaherty on the 15-day injured list. Right shoulder strain.
Jun 15, 2022Status changeSt. Louis Cardinals activated RHP Jack Flaherty.
May 20, 2022Status changeSt. Louis Cardinals transferred RHP Jack Flaherty from the 10-day injured list to the 60-day injured list. Right shoulder discomfort.
Apr 4, 2022Status changeSt. Louis Cardinals placed RHP Jack Flaherty on the 10-day injured list. Right shoulder discomfort.
Sep 24, 2021Status changeSt. Louis Cardinals activated RHP Jack Flaherty from the 10-day injured list.
Aug 25, 2021Status changeSt. Louis Cardinals placed RHP Jack Flaherty on the 10-day injured list. Right shoulder strain.
Aug 13, 2021Status changeSt. Louis Cardinals activated RHP Jack Flaherty.
Jul 2, 2021Status changeSt. Louis Cardinals placed RHP Jack Flaherty on the 60-day injured list. Left oblique.
Jun 1, 2021Status changeSt. Louis Cardinals placed RHP Jack Flaherty on the 10-day injured list. Left oblique.
May 15, 2018RecalledSt. Louis Cardinals recalled RHP Jack Flaherty from Memphis Redbirds.
Apr 29, 2018OptionedSt. Louis Cardinals optioned RHP Jack Flaherty to Memphis Redbirds.
Apr 28, 2018RecalledSt. Louis Cardinals recalled Jack Flaherty from Memphis Redbirds.
Apr 4, 2018OptionedSt. Louis Cardinals optioned RHP Jack Flaherty to Memphis Redbirds.
Mar 28, 2018RecalledSt. Louis Cardinals recalled Jack Flaherty from Memphis Redbirds.
Mar 18, 2018OptionedSt. Louis Cardinals optioned RHP Jack Flaherty to Memphis Redbirds.
Sep 1, 2017Contract selectedSt. Louis Cardinals selected the contract of Jack Flaherty from Memphis Redbirds.
Jun 19, 2014SignedSt. Louis Cardinals signed RHP Jack Flaherty.

Service through 2025 per FanGraphs RosterResource; options and this-season service reconstructed from the MLB transaction log (reconstruction; FanGraphs shows n/a). Rule 5 exposure deadline Nov 17, 2026.