Isaac Mattson
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A player page shows one box score, because a hitter and a pitcher share almost no column — which half you get follows the one he appears in. Every rate is built from summed counts, so a batting average is hits over at bats across whatever window you picked rather than an average of nightly averages. Pitchers rank against starters or relievers, which is the split the sport itself draws. A dash means no number for that cell, or a zero in a roster column that counts.
Isaac Mattson
Pitcher2025 · Regular Season
One to noteIsaac Mattson leads all 288 relief pitchers in wild pitches, at 0.
94th beats 94% of the Relief Pitchers; 1 is the best of however many the row says. Higher is always better, whichever way the stat runs. Red to green by where the placing sits. A stat with no better end is left unpainted.
Cardsall 4 shown▶
Playing TimeDefensevs Relief Pitchers▶
ResultsDefensevs Relief Pitchers▶
CommandDefensevs Relief Pitchers▶
ReliefDefensevs Relief Pitchers▶
Game log44 games
| Date | Opp | IP | W | L | SV | H | HR | K | BB | ERA | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 26, 2025 | @ ATL | 1 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 9.00 | 2.00 |
| Sep 24, 2025 | @ CIN | 0.2 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 13.50 | 3.00 |
| Sep 23, 2025 | @CIN | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0.00 | 1.00 |
| Sep 19, 2025 |  ATH | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0.00 |
| Sep 14, 2025 | @ WSH | 2 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 0.00 | 1.00 |
| Sep 10, 2025 | @ BAL | 1 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 9.00 | 3.00 |
| Sep 9, 2025 | @BAL | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 0.00 | 2.00 |
| Sep 7, 2025 |  MIL | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 0.00 | 2.00 |
| Sep 3, 2025 |  LAD | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0.00 | 0.00 |
| Sep 2, 2025 | LAD | 1 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 18.00 | 3.00 |
| Aug 29, 2025 | @ BOS | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0.00 | 1.00 |
| Aug 27, 2025 | @ STL | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0.00 | 0.00 |
| Aug 26, 2025 | @STL | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0.00 | 0.00 |
| Aug 24, 2025 |  COL | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0.00 | 0.00 |
| Aug 20, 2025 |  TOR | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0.00 | 0.00 |
| Aug 17, 2025 | @ CHC | 1 | 0 | 1 | 0 | 2 | 0 | 0 | 1 | 9.00 | 3.00 |
| Aug 15, 2025 | @CHC | 1.2 | 0 | 0 | 0 | 2 | 0 | 1 | 1 | 0.00 | 1.80 |
| Aug 13, 2025 | @MIL | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0.00 | 0.00 |
| Aug 10, 2025 | CIN | 0.2 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.00 | 1.50 |
| Aug 9, 2025 | CIN | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0.00 | 0.00 |
| Aug 6, 2025 |  SF | 0.1 | 0 | 0 | 0 | 2 | 0 | 0 | 1 | 27.00 | 9.00 |
| Aug 3, 2025 | @COL | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.00 | 1.00 |
| July 30, 2025 | @SF | 2 | 1 | 0 | 0 | 2 | 0 | 3 | 0 | 0.00 | 1.00 |
| July 28, 2025 | @SF | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0.00 | 0.00 |
| July 25, 2025 |  ARI | 1 | 0 | 0 | 0 | 2 | 0 | 1 | 0 | 0.00 | 2.00 |
| July 22, 2025 |  DET | 1 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 0.00 | 1.00 |
| July 19, 2025 |  CWS | 0.1 | 0 | 0 | 0 | 2 | 0 | 1 | 1 | 54.00 | 9.00 |
| July 18, 2025 | CWS | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0.00 |
| July 9, 2025 | @ KC | 1 | 0 | 1 | 0 | 2 | 1 | 1 | 1 | 9.00 | 3.00 |
| July 8, 2025 | @KC | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | — | — |
| July 5, 2025 | @ SEA | 1.1 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0.00 | 0.00 |
| July 2, 2025 | STL | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0.00 | 2.00 |
| July 1, 2025 | STL | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 0.00 | 2.00 |
| June 27, 2025 |  NYM | 1.1 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 0.00 | 0.75 |
| June 23, 2025 | @MIL | 1.2 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 0.00 | 0.60 |
| June 20, 2025 |  TEX | 1.1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0.00 | 1.50 |
| June 19, 2025 | @DET | 0.2 | 0 | 0 | 0 | 2 | 1 | 0 | 0 | 27.00 | 3.00 |
| June 15, 2025 | @CHC | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0.00 |
| June 12, 2025 | @CHC | 1.2 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.00 | 0.60 |
| June 10, 2025 |  MIA | 2 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0.00 | 0.00 |
| June 7, 2025 |  PHI | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0.00 | 0.00 |
| May 25, 2025 | MIL | 1.1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0.00 | 0.75 |
| May 23, 2025 | MIL | 0.2 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0.00 | 0.00 |
| May 22, 2025 | MIL | 1 | 0 | 0 | 0 | 1 | 1 | 2 | 0 | 9.00 | 1.00 |
| Season | G | GS | IP | W | L | SV | ERA | WHIP | H | HR | K | BB |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 38 | 0 | 38.1 | 0 | 0 | 0 | 5.40 | 1.62 | 44 | 3 | 36 | 18 |
| 2025 | 44 | 0 | 47.2 | 3 | 3 | 0 | 2.45 | 1.13 | 35 | 4 | 45 | 19 |
| 2024 | 3 | 0 | 5.1 | 0 | 0 | 0 | 5.06 | 1.13 | 1 | 0 | 6 | 5 |
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