
Ryan Zeferjahn
Chicago CubsP
Age: 28
Bats/Throws: R/R
6'5" / 209
DOB: 2/28/1998
(28 years, 8 months, 18 days)
P
| Season | 2026 | 2027 | Total |
| Team | - - - | FGDC | - - - |
| Level | MLB | PROJ | MLB |
| G | 65 | 67 | 139 |
| GS | 0 | 0 | 1 |
| IP | 69.2 | 67.0 | 143.2 |
| K% | 30.9% | 28.1% | 29.6% |
| BB% | 13.2% | 11.6% | 13.0% |
| GB% | 44.7% | 40.5% | |
| ERA | 3.88 | 3.64 | 4.01 |
| FIP | 3.82 | 3.79 | 4.27 |
| WAR | 0.5 | 0.7 | 0.2 |
2026 Pitch
Selection
Selection
SL:49%
FA:32%
SI:16%
News
Rotowire: Zeferjahn posted a clean ninth inning with no strikeouts to earn the save Thursday against the Marlins. (9/24/2026)
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| Season | Handedness | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | vs L | 12.16 | 6.23 | 1.95 | 1.48 | 29.7% | 15.2% | 14.5% | .207 | 1.45 | .269 | 63.4% | 5.01 | 4.16 |
| 2026 | vs R | 12.13 | 4.35 | 2.79 | 0.46 | 31.9% | 11.4% | 20.5% | .186 | 1.14 | .276 | 82.6% | 2.90 | 3.43 |
| Season | Home / Away | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2026 | Home | 12.90 | 5.97 | 2.16 | 0.96 | 31.6% | 14.6% | 17.0% | .197 | 1.38 | .288 | 73.5% | 4.24 | 4.06 |
| 2026 | Away | 11.25 | 4.22 | 2.67 | 0.84 | 30.1% | 11.3% | 18.8% | .193 | 1.16 | .257 | 74.0% | 3.32 | 3.37 |
| 2026 | Home vs L | 12.42 | 6.48 | 1.92 | 1.62 | 29.9% | 15.6% | 14.3% | .197 | 1.44 | .250 | 57.0% | 5.38 | 4.22 |
| 2026 | Home vs R | 13.29 | 5.57 | 2.38 | 0.43 | 33.0% | 13.8% | 19.1% | .197 | 1.33 | .318 | 85.4% | 3.34 | 3.94 |
| 2026 | Away vs L | 11.85 | 5.93 | 2.00 | 1.32 | 29.5% | 14.8% | 14.8% | .220 | 1.46 | .290 | 71.4% | 4.56 | 4.10 |
| 2026 | Away vs R | 10.80 | 2.95 | 3.67 | 0.49 | 30.6% | 8.3% | 22.2% | .172 | 0.93 | .233 | 76.9% | 2.39 | 2.83 |
| Season | Monthly | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2026 | Mar/Apr | 11.57 | 4.41 | 2.63 | 0.00 | 30.0% | 11.4% | 18.6% | .186 | 1.16 | .282 | 47.6% | 2.36 | 3.84 |
| 2026 | May | 9.64 | 9.64 | 1.00 | 2.89 | 20.4% | 20.4% | 0.0% | .206 | 1.82 | .182 | 77.4% | 9.64 | 7.07 |
| 2026 | Jun | 15.15 | 7.90 | 1.92 | 0.00 | 41.8% | 21.8% | 20.0% | .070 | 1.10 | .150 | 93.3% | 2.37 | 2.92 |
| 2026 | Jul | 14.34 | 1.69 | 8.50 | 1.69 | 39.5% | 4.7% | 34.9% | .179 | 0.84 | .250 | 97.6% | 3.47 | 2.59 |
| 2026 | Aug | 10.64 | 3.27 | 3.25 | 1.64 | 26.0% | 8.0% | 18.0% | .302 | 1.55 | .367 | 72.4% | 4.46 | 3.20 |
| 2026 | Sept/Oct | 10.38 | 4.15 | 2.50 | 0.00 | 27.0% | 10.8% | 16.2% | .242 | 1.38 | .348 | 75.0% | 2.18 | 3.40 |
| 2026 | 1st Half | 12.48 | 6.34 | 1.97 | 0.82 | 31.8% | 16.1% | 15.6% | .151 | 1.23 | .213 | 72.2% | 4.10 | 4.15 |
| 2026 | 2nd Half | 11.57 | 3.16 | 3.67 | 1.05 | 29.5% | 8.0% | 21.4% | .263 | 1.36 | .354 | 76.2% | 3.33 | 3.05 |
| Season | Leverage | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2026 | Low Leverage | 12.71 | 4.24 | 3.00 | 0.79 | 33.1% | 11.0% | 22.1% | .200 | 1.21 | .293 | 90.5% | 3.10 | 3.11 |
| 2026 | Medium Leverage | 11.94 | 6.75 | 1.77 | 1.04 | 27.4% | 15.5% | 11.9% | .235 | 1.67 | .326 | 68.5% | 4.72 | 4.61 |
| 2026 | High Leverage | 11.29 | 5.40 | 2.09 | 0.98 | 30.7% | 14.7% | 16.0% | .138 | 1.04 | .167 | 46.9% | 4.30 | 4.12 |
| Season | Situational | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2026 | Bases Empty | 11.73 | 4.36 | 2.69 | 1.09 | 29.3% | 10.9% | 18.4% | .208 | 1.27 | .282 | 100.0% | 4.07 | 4.05 |
| 2026 | Men on Base | 12.52 | 5.89 | 2.13 | 0.74 | 32.5% | 15.3% | 17.2% | .183 | 1.28 | .263 | 45.9% | 3.59 | 3.47 |
| 2026 | Men In Scoring | 11.32 | 6.53 | 1.73 | 0.00 | 28.3% | 16.3% | 12.0% | .222 | 1.50 | .320 | 25.0% | 2.91 | 3.86 |
| Season | Through Count | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2026 | Through 3 - 0 | 4.50 | 85.50 | 0.05 | 0.00 | 3.7% | 70.4% | -66.7% | .143 | 10.00 | .167 | 100.0% | 32.10 | 32.85 |
| 2026 | Through 3 - 1 | 11.57 | 23.14 | 0.50 | 1.93 | 21.4% | 42.9% | -21.4% | .125 | 3.00 | .111 | 95.2% | 11.03 | 10.18 |
| 2026 | Through 3 - 2 | 16.55 | 15.68 | 1.06 | 2.61 | 31.1% | 29.5% | 1.6% | .279 | 2.90 | .429 | 93.0% | 8.42 | 5.82 |
| 2026 | Through 2 - 0 | 12.38 | 29.25 | 0.42 | 1.13 | 19.3% | 45.6% | -26.3% | .207 | 4.00 | .294 | 85.9% | 12.47 | 11.98 |
| 2026 | Through 1 - 0 | 11.52 | 11.52 | 1.00 | 1.08 | 24.6% | 24.6% | 0.0% | .196 | 2.00 | .259 | 82.7% | 6.54 | 6.61 |
| 2026 | Through 2 - 1 | 14.79 | 10.93 | 1.35 | 1.29 | 31.9% | 23.6% | 8.3% | .241 | 2.14 | .367 | 80.9% | 5.31 | 4.54 |
| 2026 | Through 1 - 1 | 13.64 | 3.13 | 4.36 | 0.85 | 37.2% | 8.5% | 28.7% | .177 | 0.98 | .266 | 73.8% | 2.63 | 2.68 |
| 2026 | Through 0 - 1 | 13.95 | 1.80 | 7.75 | 0.68 | 39.5% | 5.1% | 34.4% | .196 | 0.90 | .309 | 66.1% | 1.80 | 1.84 |
| 2026 | Through 2 - 2 | 16.97 | 5.40 | 3.14 | 0.77 | 44.0% | 14.0% | 30.0% | .176 | 1.24 | .333 | 84.6% | 2.37 | 2.10 |
| 2026 | Through 1 - 2 | 17.51 | 1.19 | 14.75 | 0.89 | 54.6% | 3.7% | 50.9% | .126 | 0.56 | .244 | 79.7% | 0.99 | 0.65 |
| 2026 | Through 0 - 2 | 18.17 | 1.56 | 11.67 | 0.52 | 55.6% | 4.8% | 50.8% | .136 | 0.63 | .304 | 75.5% | 0.50 | 0.28 |
| Season | SP / RP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2026 | As Reliever | 12.14 | 5.17 | 2.35 | 0.90 | 30.9% | 13.2% | 17.8% | .195 | 1.28 | .273 | 73.7% | 3.82 | 3.75 |
| Season | Shifts | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2026 | No Shift | 0.00 | 0.00 | 0.00 | 0.00 | 0.0% | 0.0% | 0.0% | .386 | 1.89 | .378 | 100.0% | 3.10 | 5.11 |
| 2026 | Shift - All | 0.00 | 0.00 | 0.00 | 0.00 | 0.0% | 0.0% | 0.0% | .236 | 0.93 | .231 | 100.0% | 3.10 | 5.22 |
| 2026 | Shift - Traditional | 0.00 | 0.00 | 0.00 | 0.00 | 0.0% | 0.0% | 0.0% | .216 | 0.83 | .216 | 100.0% | 3.10 | 5.25 |
| 2026 | Shift - Non Traditional | 0.00 | 0.00 | 0.00 | 0.00 | 0.0% | 0.0% | 0.0% | .444 | 2.40 | .364 | 100.0% | 3.10 | 4.91 |
| Season | TTO | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2026 | 1st Through Order as RP | 12.14 | 5.17 | 2.35 | 0.90 | 30.9% | 13.2% | 17.8% | .195 | 1.28 | .273 | 73.7% | 3.82 | 3.75 |
| Season | Handedness | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | vs L | 12.16 | 6.23 | 1.95 | 1.48 | 29.7% | 15.2% | 14.5% | .207 | 1.45 | .269 | 63.4% | 5.01 | 4.16 |
| 2026 | vs R | 12.13 | 4.35 | 2.79 | 0.46 | 31.9% | 11.4% | 20.5% | .186 | 1.14 | .276 | 82.6% | 2.90 | 3.43 |
| Season | Home / Away | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2026 | Home | 12.90 | 5.97 | 2.16 | 0.96 | 31.6% | 14.6% | 17.0% | .197 | 1.38 | .288 | 73.5% | 4.24 | 4.06 |
| 2026 | Away | 11.25 | 4.22 | 2.67 | 0.84 | 30.1% | 11.3% | 18.8% | .193 | 1.16 | .257 | 74.0% | 3.32 | 3.37 |
| 2026 | Home vs L | 12.42 | 6.48 | 1.92 | 1.62 | 29.9% | 15.6% | 14.3% | .197 | 1.44 | .250 | 57.0% | 5.38 | 4.22 |
| 2026 | Home vs R | 13.29 | 5.57 | 2.38 | 0.43 | 33.0% | 13.8% | 19.1% | .197 | 1.33 | .318 | 85.4% | 3.34 | 3.94 |
| 2026 | Away vs L | 11.85 | 5.93 | 2.00 | 1.32 | 29.5% | 14.8% | 14.8% | .220 | 1.46 | .290 | 71.4% | 4.56 | 4.10 |
| 2026 | Away vs R | 10.80 | 2.95 | 3.67 | 0.49 | 30.6% | 8.3% | 22.2% | .172 | 0.93 | .233 | 76.9% | 2.39 | 2.83 |
| Season | Monthly | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2026 | Mar/Apr | 11.57 | 4.41 | 2.63 | 0.00 | 30.0% | 11.4% | 18.6% | .186 | 1.16 | .282 | 47.6% | 2.36 | 3.84 |
| 2026 | May | 9.64 | 9.64 | 1.00 | 2.89 | 20.4% | 20.4% | 0.0% | .206 | 1.82 | .182 | 77.4% | 9.64 | 7.07 |
| 2026 | Jun | 15.15 | 7.90 | 1.92 | 0.00 | 41.8% | 21.8% | 20.0% | .070 | 1.10 | .150 | 93.3% | 2.37 | 2.92 |
| 2026 | Jul | 14.34 | 1.69 | 8.50 | 1.69 | 39.5% | 4.7% | 34.9% | .179 | 0.84 | .250 | 97.6% | 3.47 | 2.59 |
| 2026 | Aug | 10.64 | 3.27 | 3.25 | 1.64 | 26.0% | 8.0% | 18.0% | .302 | 1.55 | .367 | 72.4% | 4.46 | 3.20 |
| 2026 | Sept/Oct | 10.38 | 4.15 | 2.50 | 0.00 | 27.0% | 10.8% | 16.2% | .242 | 1.38 | .348 | 75.0% | 2.18 | 3.40 |
| 2026 | 1st Half | 12.48 | 6.34 | 1.97 | 0.82 | 31.8% | 16.1% | 15.6% | .151 | 1.23 | .213 | 72.2% | 4.10 | 4.15 |
| 2026 | 2nd Half | 11.57 | 3.16 | 3.67 | 1.05 | 29.5% | 8.0% | 21.4% | .263 | 1.36 | .354 | 76.2% | 3.33 | 3.05 |
| Season | Leverage | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2026 | Low Leverage | 12.71 | 4.24 | 3.00 | 0.79 | 33.1% | 11.0% | 22.1% | .200 | 1.21 | .293 | 90.5% | 3.10 | 3.11 |
| 2026 | Medium Leverage | 11.94 | 6.75 | 1.77 | 1.04 | 27.4% | 15.5% | 11.9% | .235 | 1.67 | .326 | 68.5% | 4.72 | 4.61 |
| 2026 | High Leverage | 11.29 | 5.40 | 2.09 | 0.98 | 30.7% | 14.7% | 16.0% | .138 | 1.04 | .167 | 46.9% | 4.30 | 4.12 |
| Season | Situational | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2026 | Bases Empty | 11.73 | 4.36 | 2.69 | 1.09 | 29.3% | 10.9% | 18.4% | .208 | 1.27 | .282 | 100.0% | 4.07 | 4.05 |
| 2026 | Men on Base | 12.52 | 5.89 | 2.13 | 0.74 | 32.5% | 15.3% | 17.2% | .183 | 1.28 | .263 | 45.9% | 3.59 | 3.47 |
| 2026 | Men In Scoring | 11.32 | 6.53 | 1.73 | 0.00 | 28.3% | 16.3% | 12.0% | .222 | 1.50 | .320 | 25.0% | 2.91 | 3.86 |
| Season | Through Count | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2026 | Through 3 - 0 | 4.50 | 85.50 | 0.05 | 0.00 | 3.7% | 70.4% | -66.7% | .143 | 10.00 | .167 | 100.0% | 32.10 | 32.85 |
| 2026 | Through 3 - 1 | 11.57 | 23.14 | 0.50 | 1.93 | 21.4% | 42.9% | -21.4% | .125 | 3.00 | .111 | 95.2% | 11.03 | 10.18 |
| 2026 | Through 3 - 2 | 16.55 | 15.68 | 1.06 | 2.61 | 31.1% | 29.5% | 1.6% | .279 | 2.90 | .429 | 93.0% | 8.42 | 5.82 |
| 2026 | Through 2 - 0 | 12.38 | 29.25 | 0.42 | 1.13 | 19.3% | 45.6% | -26.3% | .207 | 4.00 | .294 | 85.9% | 12.47 | 11.98 |
| 2026 | Through 1 - 0 | 11.52 | 11.52 | 1.00 | 1.08 | 24.6% | 24.6% | 0.0% | .196 | 2.00 | .259 | 82.7% | 6.54 | 6.61 |
| 2026 | Through 2 - 1 | 14.79 | 10.93 | 1.35 | 1.29 | 31.9% | 23.6% | 8.3% | .241 | 2.14 | .367 | 80.9% | 5.31 | 4.54 |
| 2026 | Through 1 - 1 | 13.64 | 3.13 | 4.36 | 0.85 | 37.2% | 8.5% | 28.7% | .177 | 0.98 | .266 | 73.8% | 2.63 | 2.68 |
| 2026 | Through 0 - 1 | 13.95 | 1.80 | 7.75 | 0.68 | 39.5% | 5.1% | 34.4% | .196 | 0.90 | .309 | 66.1% | 1.80 | 1.84 |
| 2026 | Through 2 - 2 | 16.97 | 5.40 | 3.14 | 0.77 | 44.0% | 14.0% | 30.0% | .176 | 1.24 | .333 | 84.6% | 2.37 | 2.10 |
| 2026 | Through 1 - 2 | 17.51 | 1.19 | 14.75 | 0.89 | 54.6% | 3.7% | 50.9% | .126 | 0.56 | .244 | 79.7% | 0.99 | 0.65 |
| 2026 | Through 0 - 2 | 18.17 | 1.56 | 11.67 | 0.52 | 55.6% | 4.8% | 50.8% | .136 | 0.63 | .304 | 75.5% | 0.50 | 0.28 |
| Season | SP / RP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2026 | As Reliever | 12.14 | 5.17 | 2.35 | 0.90 | 30.9% | 13.2% | 17.8% | .195 | 1.28 | .273 | 73.7% | 3.82 | 3.75 |
| Season | Shifts | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2026 | No Shift | 0.00 | 0.00 | 0.00 | 0.00 | 0.0% | 0.0% | 0.0% | .386 | 1.89 | .378 | 100.0% | 3.10 | 5.11 |
| 2026 | Shift - All | 0.00 | 0.00 | 0.00 | 0.00 | 0.0% | 0.0% | 0.0% | .236 | 0.93 | .231 | 100.0% | 3.10 | 5.22 |
| 2026 | Shift - Traditional | 0.00 | 0.00 | 0.00 | 0.00 | 0.0% | 0.0% | 0.0% | .216 | 0.83 | .216 | 100.0% | 3.10 | 5.25 |
| 2026 | Shift - Non Traditional | 0.00 | 0.00 | 0.00 | 0.00 | 0.0% | 0.0% | 0.0% | .444 | 2.40 | .364 | 100.0% | 3.10 | 4.91 |
| Season | TTO | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | K-BB% | AVG | WHIP | BABIP | LOB% | FIP | xFIP |
| 2026 | 1st Through Order as RP | 12.14 | 5.17 | 2.35 | 0.90 | 30.9% | 13.2% | 17.8% | .195 | 1.28 | .273 | 73.7% | 3.82 | 3.75 |

