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Isaac Mattson is a right-handed pitcher for the Pittsburgh Pirates. In MLB, Isaac Mattson has appeared in 77 games (82.1 IP) with a 3.17 ERA and 8.31 strikeouts per nine. In AAA, Isaac Mattson has appeared in 99 games (135.0 IP) with a 3.87 ERA and 11.27 strikeouts per nine.
The table below lists the 50 most recent of Isaac Mattson's 194 tracked appearances, newest first, with innings pitched, hits, earned runs, walks, and strikeouts. Each date links to the full game page.
| Date | Lvl | Opp | IP | H | ER | BB | K |
|---|---|---|---|---|---|---|---|
| Sep 5, 2026 | MLB | Los Angeles Angels | 2.0 | 4 | 3 | 0 | 2 |
| Aug 29, 2026 | AAA | Columbus Clippers | 2.1 | 1 | 0 | 1 | 3 |
| Aug 25, 2026 | AAA | Columbus Clippers | 3.0 | 0 | 0 | 0 | 3 |
| Aug 21, 2026 | AAA | Louisville Bats | 2.0 | 3 | 1 | 1 | 2 |
| Aug 17, 2026 | MLB | Detroit Tigers | 2.0 | 2 | 1 | 2 | 1 |
| Aug 9, 2026 | AAA | Iowa Cubs | 1.0 | 0 | 0 | 0 | 0 |
| Aug 6, 2026 | AAA | Iowa Cubs | 1.1 | 2 | 0 | 1 | 3 |
| Aug 4, 2026 | AAA | Iowa Cubs | 1.0 | 0 | 0 | 0 | 2 |
| Jul 28, 2026 | MLB | Arizona Diamondbacks | 1.2 | 3 | 1 | 1 | 3 |
| Jul 25, 2026 | MLB | Chicago Cubs | 0.1 | 4 | 3 | 1 | 1 |
| Jul 19, 2026 | MLB | Cleveland Guardians | 1.0 | 0 | 0 | 0 | 1 |
| Jul 18, 2026 | MLB | Cleveland Guardians | 1.0 | 1 | 0 | 0 | 2 |
| Jul 12, 2026 | MLB | Milwaukee Brewers | 0.2 | 1 | 0 | 1 | 1 |
| Jul 11, 2026 | MLB | Milwaukee Brewers | 1.0 | 1 | 0 | 0 | 0 |
| Jul 8, 2026 | MLB | Atlanta Braves | 1.0 | 2 | 1 | 0 | 1 |
| Jul 5, 2026 | MLB | Washington Nationals | 1.0 | 2 | 0 | 0 | 1 |
| Jul 3, 2026 | MLB | Washington Nationals | 1.1 | 3 | 4 | 1 | 1 |
| Jun 30, 2026 | MLB | Philadelphia Phillies | 0.2 | 1 | 0 | 0 | 0 |
| Jun 27, 2026 | MLB | Cincinnati Reds | 1.0 | 0 | 0 | 0 | 2 |
| Jun 26, 2026 | MLB | Cincinnati Reds | 1.0 | 0 | 0 | 0 | 1 |
| Jun 23, 2026 | MLB | Seattle Mariners | 1.0 | 0 | 0 | 0 | 1 |
| Jun 17, 2026 | MLB | Athletics | 1.0 | 1 | 1 | 0 | 2 |
| Jun 14, 2026 | MLB | Miami Marlins | 1.1 | 0 | 0 | 2 | 1 |
| Jun 10, 2026 | AAA | Columbus Clippers | 2.0 | 1 | 0 | 2 | 3 |
| Jun 7, 2026 | AAA | St. Paul Saints | 1.0 | 0 | 0 | 0 | 1 |
| Jun 4, 2026 | AAA | St. Paul Saints | 1.0 | 3 | 0 | 1 | 1 |
| Jun 3, 2026 | AAA | St. Paul Saints | 0.1 | 2 | 2 | 2 | 0 |
| May 31, 2026 | AAA | Iowa Cubs | 1.0 | 0 | 0 | 1 | 3 |
| May 29, 2026 | AAA | Iowa Cubs | 1.0 | 0 | 0 | 0 | 2 |
| May 27, 2026 | AAA | Iowa Cubs | 1.0 | 1 | 0 | 0 | 0 |
| May 24, 2026 | AAA | Toledo Mud Hens | 1.0 | 0 | 0 | 0 | 1 |
| May 22, 2026 | AAA | Toledo Mud Hens | 1.1 | 1 | 0 | 0 | 0 |
| May 17, 2026 | MLB | Philadelphia Phillies | 1.0 | 1 | 0 | 0 | 0 |
| May 16, 2026 | MLB | Philadelphia Phillies | 1.1 | 0 | 0 | 1 | 2 |
| May 10, 2026 | MLB | San Francisco Giants | 0.1 | 3 | 2 | 0 | 0 |
| May 7, 2026 | MLB | Arizona Diamondbacks | 0.1 | 0 | 0 | 0 | 1 |
| Apr 30, 2026 | MLB | St. Louis Cardinals | 0.2 | 3 | 5 | 2 | 0 |
| Apr 27, 2026 | MLB | St. Louis Cardinals | 0.1 | 0 | 0 | 0 | 1 |
| Apr 25, 2026 | MLB | Milwaukee Brewers | 1.0 | 0 | 0 | 0 | 0 |
| Apr 24, 2026 | MLB | Milwaukee Brewers | 1.0 | 0 | 0 | 1 | 1 |
| Apr 19, 2026 | MLB | Tampa Bay Rays | 1.0 | 0 | 0 | 0 | 1 |
| Apr 18, 2026 | MLB | Tampa Bay Rays | 1.0 | 0 | 0 | 0 | 0 |
| Apr 16, 2026 | MLB | Washington Nationals | 1.0 | 0 | 0 | 1 | 0 |
| Apr 14, 2026 | MLB | Washington Nationals | 2.0 | 2 | 0 | 0 | 1 |
| Apr 11, 2026 | MLB | Chicago Cubs | 1.0 | 2 | 0 | 0 | 1 |
| Apr 10, 2026 | MLB | Chicago Cubs | 1.0 | 0 | 0 | 1 | 0 |
| Apr 7, 2026 | MLB | San Diego Padres | 0.2 | 1 | 0 | 0 | 0 |
| Apr 6, 2026 | MLB | San Diego Padres | 1.0 | 2 | 0 | 0 | 2 |
| Apr 4, 2026 | MLB | Baltimore Orioles | 1.0 | 1 | 0 | 1 | 1 |
| Apr 1, 2026 | MLB | Cincinnati Reds | 1.1 | 1 | 0 | 0 | 0 |