Jonah Heim

C · S/R · age 31.2 · ATH

XIX-AXX-B FAOCTOBER OK

Roster status
ACTIVE
Service thru 2025
5+097
Service now / projected
6+097 / 6+097
Option years left (2026)
2
Assignments left this season
5 of 5
Contract (2027)
FREE AGENT
Acquired
Purchased (ATL) May'26
Outrighted / DFA'd before
0 / 1
Contract
1 yr, $1.25M (2026)

Next 90 days, by the model

Stays put
63%
Designated
30%
Optioned
1%
Traded
5%
Released or non-tendered
1%

Pushing the cut risk up: this season's WAR (-0.32) raises it, this season's plate appearances (360) lowers it, age (31.22) raises it.

Context the model does not weigh: ZiPS projects 1.6 WAR, -0.3 WAR this season; 2 C on the 40-man, of whom Jonah Heim is 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?

ATH returns 1 C on the 40-man once 1 free agent leaves; about 3 C jobs survive a normal winter. By his own recent record he ranks 2nd among the returners (-0.4 WAR against a bar of 0.4), which the calibrated model turns into 87% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 2nd (0.9 WAR, bar 0.2), worth 93% kept on the same model.

By recent record: returning CProj. WAR
1. Brian Serven0.4
By ZiPS / Steamer: returning CProj. WAR
1. Brian Serven0.2

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 (1 yr, $1.25M (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.
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
202032yesJul 22, 2020 to Aug 24, 2020 (32d, spring training)

Transaction log

May 4, 2026TradedAtlanta Braves traded C Jonah Heim to Athletics for cash.
May 4, 2026Designated for assignmentAtlanta Braves designated C Jonah Heim for assignment.
Feb 10, 2026Signed as free agentAtlanta Braves signed free agent C Jonah Heim.
Nov 21, 2025Declared free agentC Jonah Heim elected free agency.
Jun 18, 2024Status changeTexas Rangers activated C Jonah Heim from the paternity list.
Jun 15, 2024Status changeTexas Rangers placed C Jonah Heim on the paternity list.
Apr 23, 2024Status changeTexas Rangers activated C Jonah Heim from the bereavement list.
Apr 20, 2024Status changeTexas Rangers placed C Jonah Heim on the bereavement list.
Aug 13, 2023Status changeTexas Rangers activated C Jonah Heim from the 10-day injured list.
Jul 28, 2023Status changeTexas Rangers placed C Jonah Heim on the 10-day injured list retroactive to July 27, 2023. Left wrist tendon strain.
Jul 10, 2023Status changeAmerican League All-Stars activated C Jonah Heim.
May 1, 2022Status changeTexas Rangers activated C Jonah Heim from the paternity list.
Apr 28, 2022Status changeTexas Rangers placed C Jonah Heim on the paternity list.
Aug 31, 2021Status changeTexas Rangers activated C Jonah Heim from the 10-day injured list.
Aug 24, 2021Status changeTexas Rangers placed C Jonah Heim on the 10-day injured list.
Feb 6, 2021TradedOakland Athletics traded LF Khris Davis, C Jonah Heim and RHP Dane Acker to Texas Rangers for SS Elvis Andrus, C Aramis Garcia and cash.
Aug 24, 2020RecalledOakland Athletics recalled C Jonah Heim from Athletics Alternate Training Site.
Jul 22, 2020OptionedOakland Athletics optioned C Jonah Heim to Athletics Alternate Training Site.
Nov 1, 2019Contract selectedOakland Athletics selected the contract of Jonah Heim from Las Vegas Aviators.
Dec 19, 2017TradedTampa Bay Rays traded C Jonah Heim to Oakland Athletics.
Aug 1, 2016TradedTampa Bay Rays traded 2B Steve Pearce to Baltimore Orioles for C Jonah Heim.
Jun 26, 2013SignedBaltimore Orioles signed C Jonah Heim.

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.