Ryan Zeferjahn
RP · R/R · age 28.5 · CHCOCTOBER OK
ACTIVE
1+038
2+038 / 2+038
3
5 of 5
PRE-ARBITRATION / AUTO-RENEWAL
Trade (LAA) Aug'26
0 / 0
1 yr, $780k (2026)
Next 90 days, by the model
97%
<1%
2%
1%
<1%
Pushing the cut risk around: age (28.54) raises it, this season's innings (65) lowers it, last season's WAR (-0.70) raises it.
Context the model does not weigh: ZiPS projects 0.0 WAR, 0.4 WAR this season; 20 RP on the 40-man, of whom Aaron Civale, Trent Thornton 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?
CHC returns 18 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 13th among the returners (0.1 WAR against a bar of 0.5), which the calibrated model turns into 94% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 14th (0.0 WAR, bar 0.2), worth 94% kept on the same model.
| By recent record: returning RP | Proj. WAR |
|---|---|
| 1. Edward Cabrera | 0.9 |
| 2. Daniel Palencia | 0.9 |
| 3. Hunter Harvey | 0.8 |
| 4. Colin Rea | 0.8 |
| 5. Phil Maton | 0.7 |
| 6. Shelby Miller | 0.6 |
| 7. Jacob Webb | 0.6 |
| 8. Riley Martin | 0.5 |
| 9. Caleb Thielbarlast job | 0.5 |
| 10. Tyler Ferguson | 0.3 |
| 11. Javier Assad | 0.3 |
| 12. Jayden Murray | 0.1 |
| By ZiPS / Steamer: returning RP | Proj. WAR |
|---|---|
| 1. Edward Cabrera | 1.7 |
| 2. Hunter Harvey | 0.8 |
| 3. Colin Rea | 0.8 |
| 4. Daniel Palencia | 0.5 |
| 5. Caleb Thielbar | 0.5 |
| 6. Javier Assad | 0.5 |
| 7. Phil Maton | 0.2 |
| 8. Porter Hodge | 0.2 |
| 9. Shelby Millerlast job | 0.2 |
| 10. Tyler Ferguson | 0.1 |
| 11. Ethan Roberts | 0.1 |
| 12. Jacob Webb | 0.0 |
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 minors
- Yes, 3 option years left. 5 of the five optional assignments for 2026 remain. He has 0 option days this season; at 20 a 2026 option year is used and those days stop counting as service. Once down he must stay 15 days unless he replaces an injured or traded player.
- Option years and the 20-day rule · Five optional assignments per season · Minimum stay on option
- 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, $780k (2026)). 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.
- 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 and the 20-day rule3 option years left entering 2026.A season with fewer than 20 days on optional assignment does not count as an option year, and those days count as Major League service. 2022-2026 Basic Agreement, Article XIX(E) and XXI(B), p. 98 (the number itself is in Major League Rule 7(c))
- Five optional assignments per seasonOptioned 0 times this season that count toward the cap of 5: 5 left.A player can be optioned at most five times in a season; a sixth trip requires outright waivers. 2022-2026 Basic Agreement, Article XIX(E), p. 98 (the number itself is in Major League Rule 7(c))
- Post-season roster eligibilityOn 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. 2022-2026 Basic Agreement, Attachment 25, p. 253 (the number itself is in Major League Rule 40)
- Rule 5 clockOn a 40-man roster (would first be exposed after 2022 otherwise).
Transaction log
| Aug 4, 2026 | Status change | Chicago Cubs activated RHP Ryan Zeferjahn. |
| Aug 3, 2026 | Traded | Los Angeles Angels traded RHP Ryan Zeferjahn to Chicago Cubs for C Moisés Ballesteros and RHP Mason McGwire. |
| Sep 23, 2025 | Status change | Los Angeles Angels activated RHP Ryan Zeferjahn from the 15-day injured list. |
| Sep 6, 2025 | Status change | Los Angeles Angels placed RHP Ryan Zeferjahn on the 15-day injured list. Right knee tendinitis. |
| Aug 23, 2024 | Contract selected | Los Angeles Angels selected the contract of RHP Ryan Zeferjahn from Salt Lake Bees. |
| Jul 30, 2024 | Traded | Los Angeles Angels traded RHP Luis García to Boston Red Sox for SS Matthew Lugo, 1B Niko Kavadas, RHP Ryan Zeferjahn and RHP Yeferson Vargas. |
| Jun 12, 2019 | Signed | Boston Red Sox signed RHP Ryan Zeferjahn. |
Service through 2025 per FanGraphs RosterResource; options and this-season service reconstructed from the MLB transaction log (reconstruction; FanGraphs shows 3). Rule 5 exposure deadline Nov 17, 2026.