Bailey Horn

RP · L/L · age 28.7 · DET

60-DAY ILOCTOBER: REINSTATE

Roster status
60-DAY IL (Tommy John surgery)
Service thru 2025
0+102
Service now / projected
1+102 / 1+102
Option years left (2026)
1
Assignments left this season
5 of 5
Contract (2027)
PRE-ARBITRATION / AUTO-RENEWAL
Acquired
Purchased (STL) Mar'25
Outrighted / DFA'd before
0 / 3
Contract
none listed

Next 90 days, by the model

Stays put
64%
Designated
30%
Optioned
2%
Traded
1%
Released or non-tendered
3%

Pushing the cut risk up: roster status (2) raises it, this season's WAR raises it, age (28.66) raises it.

Context the model does not weigh: ZiPS projects -0.0 WAR; 14 RP on the 40-man, of whom Tyler Kinley, Burch Smith 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 RP on the 40-man once 2 free agents leave; about 9 RP jobs survive a normal winter. By his own recent record he ranks 10th among the returners (-0.5 WAR against a bar of -0.2), which the calibrated model turns into 27% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 11th (-0.1 WAR, bar 0.1), worth 36% kept on the same model.

By recent record: returning RPProj. WAR
1. Will Vest2.0
2. Drew Sommers1.2
3. Brant Hurter1.1
4. Kenley Jansen1.0
5. Tyler Holton0.6
6. Brenan Hanifee0.3
7. Kyle Finnegan0.2
8. Beau Brieske-0.2
9. Yilber Diazlast job-0.2
10. Bailey Horn-0.5
11. Jacob Waguespack-0.5
By ZiPS / Steamer: returning RPProj. WAR
1. Will Vest0.8
2. Brant Hurter0.8
3. Tyler Holton0.6
4. Brenan Hanifee0.3
5. Kyle Finnegan0.3
6. Jacob Waguespack0.3
7. Kenley Jansen0.2
8. Beau Brieske0.2
9. Drew Sommerslast job0.1
10. Yilber Diaz0.1
11. Bailey Horn-0.1

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: Eligible once reinstated

On the 60-day IL before the cutoff, so he is on the eligibility list. He has served the 60 days (145), so the only step is reinstatement: the club must open a 40-man spot (the 40-man is full, so someone must be traded, outrighted, released or moved to the 60-day IL) and a 26-man spot before the series roster is submitted.

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 while he is on the injured list. He must be healthy and reinstated first; a rehab assignment (20 days, 30 for pitchers, with his consent) is the only way to send him down injured.
Injured players cannot be sent down
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. If he clears, the club can outright him to the minors and he has no say; he stays under club control on a minor-league deal. He would then be Rule 5-eligible and would hold XX-D rights against any future outright. 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.
Designated for assignment: 7 days · Outright waivers · Article XX-D: the right to walk
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
renew him for next year
Pre-arbitration: the club sets his 2027 salary near the minimum ($780,000 floor) and he has no leverage beyond a non-tender.
Minimum salaries · Tender deadline

What the rules say about him

Option years, season by season

SeasonDays on optionOption year usedStints
2025164yesMar 2, 2025 to Mar 4, 2025 (0d, spring training)Mar 4, 2025 to Mar 13, 2025 (0d, spring training)Mar 13, 2025 to Apr 19, 2025 (32d, within 24h of trade)Apr 24, 2025 to Jul 2, 2025 (69d)Jul 7, 2025 to Aug 14, 2025 (38d)Aug 18, 2025 to Sep 2, 2025 (15d)Sep 19, 2025 to Sep 29, 2025 (10d)
2024143yesMar 12, 2024 to Apr 26, 2024 (37d, spring training)Apr 30, 2024 to Jun 28, 2024 (59d, within 24h of trade)Aug 2, 2024 to Aug 12, 2024 (10d)Aug 19, 2024 to Aug 26, 2024 (7d)Aug 27, 2024 to Sep 14, 2024 (18d)Sep 19, 2024 to Oct 1, 2024 (12d)

Transaction log

Apr 22, 2026Status changeDetroit Tigers placed LHP Bailey Horn on the 60-day injured list. Left elbow arthroscopy recovery.
Mar 25, 2026Status changeDetroit Tigers placed LHP Bailey Horn on the 15-day injured list retroactive to March 22, 2026. Left elbow arthroscopy recovery.
Dec 17, 2025Status changeDetroit Tigers activated LHP Bailey Horn.
Oct 11, 2025Status changeDetroit Tigers activated LHP Bailey Horn.
Sep 29, 2025RecalledDetroit Tigers recalled LHP Bailey Horn from Toledo Mud Hens.
Sep 19, 2025OptionedDetroit Tigers optioned LHP Bailey Horn to Toledo Mud Hens.
Sep 11, 2025Status changeDetroit Tigers activated LHP Bailey Horn from the paternity list.
Sep 9, 2025Status changeDetroit Tigers placed LHP Bailey Horn on the paternity list.
Sep 2, 2025RecalledDetroit Tigers recalled LHP Bailey Horn from Toledo Mud Hens.
Aug 18, 2025OptionedDetroit Tigers optioned LHP Bailey Horn to Toledo Mud Hens.
Aug 14, 2025RecalledDetroit Tigers recalled LHP Bailey Horn from Toledo Mud Hens.
Jul 7, 2025OptionedDetroit Tigers optioned LHP Bailey Horn to Toledo Mud Hens.
Jul 2, 2025RecalledDetroit Tigers recalled LHP Bailey Horn from Toledo Mud Hens.
Apr 24, 2025OptionedDetroit Tigers optioned LHP Bailey Horn to Toledo Mud Hens.
Apr 19, 2025RecalledDetroit Tigers recalled LHP Bailey Horn from Toledo Mud Hens.
Mar 13, 2025OptionedDetroit Tigers optioned LHP Bailey Horn to Toledo Mud Hens.
Mar 13, 2025TradedSt. Louis Cardinals traded LHP Bailey Horn to Detroit Tigers.
Mar 13, 2025Designated for assignmentSt. Louis Cardinals designated LHP Bailey Horn for assignment.
Mar 4, 2025OptionedSt. Louis Cardinals optioned LHP Bailey Horn to Memphis Redbirds.
Mar 2, 2025OptionedSt. Louis Cardinals optioned LHP Bailey Horn to Memphis Redbirds.
Jan 9, 2025Claimed off waiversSt. Louis Cardinals claimed LHP Bailey Horn off waivers from Detroit Tigers.
Dec 27, 2024Designated for assignmentDetroit Tigers designated LHP Bailey Horn for assignment.
Nov 22, 2024Claimed off waiversDetroit Tigers claimed LHP Bailey Horn off waivers from Boston Red Sox.
Oct 1, 2024RecalledBoston Red Sox recalled LHP Bailey Horn from Worcester Red Sox.
Sep 19, 2024OptionedBoston Red Sox optioned LHP Bailey Horn to Worcester Red Sox.
Sep 14, 2024RecalledBoston Red Sox recalled LHP Bailey Horn from Worcester Red Sox.
Aug 27, 2024OptionedBoston Red Sox optioned LHP Bailey Horn to Worcester Red Sox.
Aug 26, 2024RecalledBoston Red Sox recalled LHP Bailey Horn from Worcester Red Sox.
Aug 19, 2024OptionedBoston Red Sox optioned LHP Bailey Horn to Worcester Red Sox.
Aug 12, 2024RecalledBoston Red Sox recalled LHP Bailey Horn from Worcester Red Sox.
Aug 2, 2024OptionedBoston Red Sox optioned LHP Bailey Horn to Worcester Red Sox.
Jun 28, 2024RecalledBoston Red Sox recalled LHP Bailey Horn from Worcester Red Sox.
Apr 30, 2024OptionedBoston Red Sox optioned LHP Bailey Horn to Worcester Red Sox.
Apr 30, 2024TradedChicago White Sox traded LHP Bailey Horn to Boston Red Sox for cash.
Apr 26, 2024Designated for assignmentChicago White Sox designated LHP Bailey Horn for assignment.
Mar 12, 2024OptionedChicago White Sox optioned LHP Bailey Horn to Charlotte Knights.
Feb 27, 2024TradedChicago Cubs traded LHP Bailey Horn to Chicago White Sox for RHP Matthew Thompson.
Nov 14, 2023Contract selectedChicago Cubs selected the contract of LHP Bailey Horn from Iowa Cubs.
Jul 29, 2021TradedChicago Cubs traded RHP Ryan Tepera to Chicago White Sox for LHP Bailey Horn.
Jun 26, 2020SignedChicago White Sox signed LHP Bailey Horn.

Service through 2025 per FanGraphs RosterResource; options and this-season service reconstructed from the MLB transaction log (reconstruction; FanGraphs shows 1). Rule 5 exposure deadline Nov 17, 2026.