Ryan Helsley has a 2-0 record with an ERA of 2.84, 16 strikeouts and 3 saves in 12 appearances versus the Diamondbacks in his career.
| NAME | DATE | TM | OPP | DEC | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | R. Helsley | 9/23/2019 |  STL | @ |  ARI | 0 | 0.00 | 1 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | |
| 2 | | R. Helsley | 9/24/2019 | STL | @ | ARI | 0 | 0.00 | 1 | 0 | 0 | 0 | 1.2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | |
| 3 | | R. Helsley | 5/27/2021 | STL | @ | ARI | 0 | 0.00 | 2 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | |
| 4 | | R. Helsley | 5/28/2021 | STL | @ | ARI | 0 | 27.00 | 1 | 0 | 0 | 0 | 0.2 | 3 | 2 | 2 | 0 | 1 | 0 | 0 | 0 | 6 | 0 | |
| 5 | | R. Helsley | 6/28/2021 | STL | vs | ARI | 0 | 0.00 | 0 | 0 | 0 | 0 | 0.2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | |
| 6 | | R. Helsley | 6/30/2021 | STL | vs | ARI | 0 | 0.00 | 0 | 0 | 0 | 0 | 0.2 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 3 | 1 | |
| 7 | | R. Helsley | 5/1/2022 | STL | vs | ARI | 0 | 0.00 | 4 | 0 | 0 | 1 | 2.0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 6 | 0 | |
| 8 | | R. Helsley | 4/12/2024 | STL | @ |  ARI | 0 | 0.00 | 2 | 0 | 0 | 1 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | |
| 9 | | R. Helsley | 4/22/2024 | STL | vs | ARI | W | 0 | 0.00 | 1 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 4 | 0 |
| 10 | | R. Helsley | 4/24/2024 | STL | vs | ARI | 0 | 0.00 | 1 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | |
| 11 | | R. Helsley | 5/23/2025 | STL | vs | AZ | 0 | 18.00 | 1 | 0 | 0 | 1 | 1.0 | 2 | 2 | 2 | 1 | 0 | 0 | 1 | 0 | 5 | 0 | |
| 12 | | R. Helsley | 5/24/2025 | STL | vs | AZ | W | 0 | 0.00 | 2 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 5 | 0 |
| Total | 0 | 2.84 | 16 | 0 | 0 | 3 | 12.2 | 11 | 4 | 4 | 1 | 3 | 0 | 6 | 0 | 49 | 1 |
Some of the information used here was obtained free of charge from Retrosheet.
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