Ryan Zeferjahn has a 0-1 record with an ERA of 4.50, 19 strikeouts and 3 saves in 20 appearances for the Cubs in his career.
| NAME | SEASON | TM | G | W | L | W% | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | ERA- | FIP | FIP- | H/9 | PRAA | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | R. Zeferjahn | 2026 | 20 | 0 | 1 | .000 | 0 | 4.50 | 19 | 0 | 0 | 3 | 18.0 | 19 | 9 | 10 | 2 | 8 | 1 | 7 | 2 | 80 | 3 | 9.50 | 4.00 | 2.38 | 1.00 | 23.8 | 10.0 | 1.50 | .340 | 5.00 | 109 | 3.93 | 95 | 9.50 | 0.4 |
| NAME | DATE | TM | OPP | DEC | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | | R. Zeferjahn | 9/24/2026 | vs | 0 | 0.00 | 0 | 0 | 0 | 1 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | |||
| 2 | | R. Zeferjahn | 9/22/2026 | vs | 0 | 0.00 | 1 | 0 | 0 | 0 | 0.2 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 4 | 1 | |||
| 3 | | R. Zeferjahn | 9/19/2026 | @ | 0 | 0.00 | 2 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 1 | |||
| 4 | | R. Zeferjahn | 9/16/2026 | vs | 0 | 0.00 | 1 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 4 | 0 | |||
| 5 | | R. Zeferjahn | 9/14/2026 | vs | 0 | 0.00 | 1 | 0 | 0 | 0 | 1.0 | 2 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 5 | 0 | |||
| 6 | | R. Zeferjahn | 9/12/2026 | vs | 0 | 0.00 | 1 | 0 | 0 | 1 | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | |||
| 7 | | R. Zeferjahn | 9/7/2026 | @ | 0 | 27.00 | 1 | 0 | 0 | 0 | 0.1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 3 | 0 | |||
| 8 | | R. Zeferjahn | 9/5/2026 | @ | 0 | 0.00 | 1 | 0 | 0 | 1 | 1.2 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 6 | 0 | |||
| 9 | | R. Zeferjahn | 9/3/2026 | vs | 0 | 0.00 | 1 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | |||
| 10 | | R. Zeferjahn | 9/1/2026 | vs | 0 | 27.00 | 1 | 0 | 0 | 0 | 0.2 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | |||
| 11 | | R. Zeferjahn | 8/29/2026 | vs | 0 | 0.00 | 2 | 0 | 0 | 0 | 1.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | |||
| 12 | | R. Zeferjahn | 8/26/2026 | @ | 0 | 9.00 | 0 | 0 | 0 | 0 | 1.0 | 2 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 4 | 0 | |||
| 13 | | R. Zeferjahn | 8/24/2026 | @ | 0 | 0.00 | 0 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | |||
| 14 | | R. Zeferjahn | 8/21/2026 | @ | L | 0 | 0.00 | 0 | 0 | 0 | 0 | 0.2 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 4 | 0 | ||
| 15 | | R. Zeferjahn | 8/17/2026 | vs | 0 | 18.00 | 1 | 0 | 0 | 0 | 1.0 | 2 | 2 | 2 | 1 | 1 | 0 | 0 | 0 | 6 | 0 | |||
| 16 | | R. Zeferjahn | 8/14/2026 | vs | 0 | 0.00 | 2 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 5 | 0 | |||
| 17 | | R. Zeferjahn | 8/11/2026 | @ | 0 | 27.00 | 0 | 0 | 0 | 0 | 0.2 | 3 | 2 | 2 | 0 | 1 | 0 | 0 | 0 | 6 | 0 | |||
| 18 | | R. Zeferjahn | 8/9/2026 | @ | 0 | 0.00 | 2 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | |||
| 19 | | R. Zeferjahn | 8/5/2026 | vs | 0 | 13.50 | 2 | 0 | 0 | 0 | 0.2 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 4 | 1 | |||
| 20 | | R. Zeferjahn | 8/4/2026 | vs | 0 | 0.00 | 0 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | |||
| 21 | | R. Zeferjahn | 8/2/2026 | vs | 0 | 0.00 | 4 | 0 | 0 | 1 | 1.2 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 7 | 0 | |||
| 22 | | R. Zeferjahn | 7/27/2026 | vs | 0 | 9.00 | 2 | 0 | 0 | 0 | 1.0 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | |||
| 23 | | R. Zeferjahn | 7/26/2026 | @ | 0 | 0.00 | 2 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | |||
| 24 | | R. Zeferjahn | 7/24/2026 | @ | 0 | 0.00 | 1 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 4 | 0 | |||
| 25 | | R. Zeferjahn | 7/21/2026 | vs | 0 | 0.00 | 3 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 5 | 0 | |||
| Total | 0 | 4.50 | 19 | 0 | 0 | 3 | 18.0 | 19 | 9 | 10 | 2 | 8 | 1 | 7 | 2 | 80 | 3 | |||||||
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 Phillies - w | 88 | 74 | .543 | 6.0 |
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| NL Central | W | L | PCT | GB |
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 Cubs - w | 89 | 73 | .549 | 14.0 |
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| NL West | W | L | PCT | GB |
 Dodgers - y | 100 | 62 | .617 | |
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 Astros - y | 81 | 81 | .500 | |
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