← Chicago Cubs
Ryan Zeferjahn
Chicago Cubs
RP · #56 · Bats R · Throws R · 6'5" · 209 lb · Age 28 · 3 yrs in MLB
2026 grade
66.6
- Runs prevented
- +4.6
- IP · ERA
- 69.2 · 3.88
- K · BB
- 94 · 40
- Rank
- 69 of 205 relievers
What the grade is made of
Runs each part saves or costs against an average pitcher facing the same batters. Contact counts a quarter for how it turned out, because over a season that's mostly the fielders and luck.
- Strikeouts94 vs 66 avg+7.6
- Home runs allowed7 vs 9 avg+2.8
- Walks34 vs 26 avg−2.7
- Hit batters9 vs 3 avg−1.9
- Contact allowed (how it turned out counts a quarter)152 vs 192 avg−1.1
- Parks pitched in−0.1
2026 game log: pitching
Game grades need 3 batters faced; starts are ranked against starts, relief outings against relief outings.
| Game | Result | Dec | IP | H | R | ER | BB | K | HR | PC | Grade |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Wed, Sep 30@SDPostseason | L 1-4 | 1.1 | 1 | 0 | 0 | 1 | 2 | 0 | 30 | 51.9 | |
| Thu, Sep 24vsMIA | W 2-1 | S | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 72.3 |
| Tue, Sep 22vsMIA | L 2-8 | 0.2 | 1 | 0 | 0 | 1 | 1 | 0 | 13 | 42.7 | |
| Sat, Sep 19@CIN | W 5-2 | H | 1.0 | 1 | 0 | 0 | 0 | 2 | 0 | 24 | 58.8 |
| Wed, Sep 16vsATL | W 8-4 | 1.0 | 1 | 0 | 0 | 0 | 1 | 0 | 20 | 41.0 | |
| Mon, Sep 14vsATL | W 7-3 | 1.0 | 2 | 0 | 0 | 1 | 1 | 0 | 24 | 17.8 | |
| Sat, Sep 12vsPIT | W 4-3 | S | 0.1 | 0 | 0 | 0 | 0 | 1 | 0 | 6 | – |
| Mon, Sep 7@MIL | L 3-4 | B | 0.1 | 1 | 1 | 1 | 1 | 1 | 0 | 14 | 24.1 |
| Sat, Sep 5@MIA | W 6-5 | S | 1.2 | 0 | 0 | 0 | 1 | 1 | 0 | 19 | 91.4 |
| Thu, Sep 3vsMIL | W 2-1 | H | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 10 | 72.3 |
| Tue, Sep 1vsMIL | L 4-9 | 0.2 | 2 | 2 | 2 | 0 | 1 | 0 | 17 | 18.9 | |
| Sat, Aug 29vsCIN | W 17-5 | 1.1 | 0 | 0 | 0 | 0 | 2 | 0 | 19 | 91.8 | |
| Wed, Aug 26@ARI | L 0-2 | 1.0 | 2 | 1 | 1 | 0 | 0 | 0 | 7 | 27.9 | |
| Mon, Aug 24@ARI | W 7-0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 81.8 | |
| Fri, Aug 21@SEA | L 5-6 | L | 0.2 | 1 | 1 | 0 | 1 | 0 | 0 | 7 | 33.5 |
| Mon, Aug 17vsCHW | W 7-5 | B | 1.0 | 2 | 2 | 2 | 1 | 1 | 1 | 24 | 7.8 |
| Fri, Aug 14vsSTL | W 3-0 | H | 1.0 | 1 | 0 | 0 | 1 | 2 | 0 | 27 | 38.3 |
| Tue, Aug 11@WSH | W 8-6 | 0.2 | 3 | 2 | 2 | 1 | 0 | 0 | 23 | 7.1 | |
| Sun, Aug 9@KC | W 10-2 | 1.0 | 1 | 0 | 0 | 0 | 2 | 0 | 24 | 59.8 | |
| Wed, Aug 5vsLAD | W 7-6 | H | 0.2 | 1 | 1 | 1 | 0 | 2 | 1 | 14 | 10.4 |
| Tue, Aug 4vsLAD | W 5-1 | H | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 72.8 |
| Sun, Aug 2vsMIL | W 3-0 | S | 1.2 | 2 | 0 | 0 | 0 | 4 | 0 | 30 | 60.4 |
| Mon, Jul 27vsHOU | L 4-6 | H | 1.0 | 2 | 1 | 1 | 0 | 2 | 0 | 23 | 27.1 |
| Sun, Jul 26@SF | W 4-3 | H | 1.0 | 1 | 0 | 0 | 0 | 2 | 0 | 10 | 53.8 |
| Fri, Jul 24@SF | L 6-7 | 1.0 | 0 | 0 | 0 | 1 | 1 | 0 | 21 | 61.9 | |
| Tue, Jul 21vsSTL | W 5-1 | 1.0 | 1 | 0 | 0 | 0 | 3 | 0 | 20 | 38.5 | |
| Sun, Jul 19vsDET | W 3-2 | S | 1.0 | 1 | 1 | 1 | 0 | 0 | 1 | 15 | 22.7 |
| Fri, Jul 17vsDET | L 1-2 | H | 1.0 | 0 | 0 | 0 | 0 | 2 | 0 | 12 | 83.7 |
| Sun, Jul 12@MIN | L 2-4 | 1.1 | 1 | 1 | 1 | 0 | 2 | 1 | 27 | 30.1 | |
| Thu, Jul 9@TEX | L 6-7 | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 17 | 75.5 | |
| Wed, Jul 8@TEX | W 13-1 | 1.0 | 1 | 0 | 0 | 0 | 2 | 0 | 17 | 54.6 | |
| Sat, Jul 4vsBOS | L 1-8 | 1.1 | 0 | 0 | 0 | 1 | 2 | 0 | 24 | 60.4 | |
| Tue, Jun 30@SEA | L 3-8 | 1.0 | 1 | 0 | 0 | 0 | 1 | 0 | 12 | 41.2 | |
| Sun, Jun 28vsATH | W 4-1 | H | 0.2 | 0 | 0 | 0 | 2 | 2 | 0 | 19 | 36.9 |
| Sat, Jun 27vsATH | W 5-2 | W | 1.0 | 0 | 0 | 0 | 0 | 2 | 0 | 16 | 83.7 |
| Tue, Jun 23vsBAL | W 5-1 | 1.0 | 0 | 0 | 0 | 0 | 3 | 0 | 16 | 83.7 | |
| Sat, Jun 20@ATH | W 7-0 | 1.2 | 0 | 0 | 0 | 1 | 3 | 0 | 24 | 91.5 | |
| Thu, Jun 18@ATH | L 0-5 | 1.0 | 0 | 0 | 0 | 2 | 1 | 0 | 21 | 48.5 | |
| Sun, Jun 14vsTB | L 3-8 | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 10 | 81.8 | |
| Fri, Jun 12vsTB | W 4-3 | S | 0.1 | 0 | 0 | 0 | 1 | 1 | 0 | 9 | – |
| Wed, Jun 10vsHOU | W 3-2 | W | 1.0 | 0 | 0 | 0 | 1 | 2 | 0 | 21 | 81.7 |
| Mon, Jun 8vsHOU | L 4-5 | 1.0 | 0 | 0 | 0 | 2 | 3 | 0 | 25 | 47.9 | |
| Sat, Jun 6@LAD | L 2-9 | 2.0 | 0 | 0 | 0 | 2 | 3 | 0 | 34 | 90.5 | |
| Wed, Jun 3vsCOL | W 11-4 | 1.0 | 2 | 1 | 1 | 0 | 0 | 0 | 24 | 26.5 | |
| Mon, Jun 1vsCOL | L 8-9 | H | 1.0 | 0 | 0 | 0 | 1 | 1 | 0 | 16 | 63.5 |
| Fri, May 29@TB | L 5-8 | L | 0.1 | 3 | 4 | 4 | 1 | 0 | 2 | 19 | 0.6 |
| Thu, May 28@DET | W 7-1 | 1.0 | 0 | 0 | 0 | 2 | 1 | 0 | 22 | 48.2 | |
| Sat, May 23vsTEX | W 5-2 | H | 1.0 | 1 | 1 | 1 | 0 | 1 | 1 | 15 | 21.6 |
| Thu, May 21vsATH | L 2-3 | L | 1.0 | 0 | 1 | 0 | 2 | 0 | 0 | 19 | 46.9 |
| Wed, May 20vsATH | L 5-6 | H | 0.1 | 0 | 1 | 1 | 0 | 0 | 0 | 11 | 26.3 |
| Mon, May 18vsATH | W 2-1 | 0.1 | 2 | 1 | 1 | 2 | 0 | 0 | 24 | 8.9 | |
| Wed, May 13@CLE | L 2-4 | 1.0 | 1 | 0 | 0 | 0 | 2 | 0 | 19 | 54.4 | |
| Sun, May 10@TOR | W 6-1 | 1.0 | 0 | 0 | 0 | 0 | 2 | 0 | 15 | 74.7 | |
| Tue, May 5vsCHW | W 4-3 | S | 1.1 | 0 | 0 | 0 | 2 | 3 | 0 | 33 | 41.7 |
| Sat, May 2vsNYM | W 4-3 | W | 2.0 | 0 | 0 | 0 | 1 | 1 | 0 | 23 | 96.6 |
| Wed, Apr 29@CHW | L 2-3 | B | 2.0 | 1 | 1 | 1 | 0 | 4 | 0 | 36 | 48.6 |
| Sun, Apr 26@KC | L 9-11 | H | 1.2 | 0 | 0 | 0 | 1 | 1 | 0 | 20 | 91.5 |
| Fri, Apr 24@KC | L 3-6 | 1.0 | 0 | 0 | 0 | 0 | 2 | 0 | 13 | 86.3 | |
| Wed, Apr 22vsTOR | W 7-3 | H | 1.1 | 1 | 2 | 2 | 1 | 1 | 0 | 21 | 38.2 |
| Sat, Apr 18vsSD | L 1-4 | L | 1.0 | 3 | 2 | 2 | 2 | 0 | 0 | 23 | 6.5 |
| Tue, Apr 14@NYY | W 7-1 | 1.0 | 1 | 0 | 0 | 0 | 2 | 0 | 27 | 41.8 | |
| Sat, Apr 11@CIN | L 3-7 | 2.0 | 2 | 1 | 1 | 0 | 1 | 0 | 43 | 60.3 | |
| Wed, Apr 8vsATL | L 2-8 | 1.2 | 2 | 2 | 2 | 2 | 2 | 0 | 42 | 23.4 | |
| Sun, Apr 5vsSEA | W 8-7 | 2.0 | 0 | 2 | 2 | 1 | 5 | 0 | 27 | 95.4 | |
| Wed, Apr 1@CHC | L 2-6 | 0.2 | 1 | 1 | 0 | 1 | 1 | 0 | 21 | 38.3 | |
| Fri, Mar 27@HOU | W 6-2 | W | 2.0 | 0 | 0 | 0 | 0 | 2 | 0 | 23 | 98.0 |
Scores, box scores and play-by-play from ESPN. The run values and park factors behind the grades were worked out from Retrosheet's play-by-play: the information used here was obtained free of charge from and is copyrighted by Retrosheet. Interested parties may contact Retrosheet at www.retrosheet.org.