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A Fair window is in play for Mattson if he gets into the game. Historically, his tendency in this range produces strong performances. The Variable profile does add a layer of doubt, so it’s not a lock. Still, he holds fantasy value.
Opposing Pitcher TriSync Projection: 3.27 vs AZ
Isaac Mattson stepping into a Fair window isn’t a bad setup. His historical propensity suggests a reliable level of output in these spots. The Variable profile introduces some risk, so there’s mild risk. Still, he can be used in fantasy lineups.
Opposing Pitcher TriSync Projection: 3.08 vs AZ
| Level | G | W | L | SV | IP | H | R | ER | HR | BB | K | K/9IP | ERA | WHIP | BAA | Game Rating +/- |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Excellent | 4 | 0 | 0 | 0 | 5.1 | 2 | 0 | 0 | 0 | 1 | 4 | 6.7 | 0.00 | 0.56 | 0.111 | +13.69% |
| Good | 31 | 1 | 0 | 0 | 28.1 | 36 | 21 | 21 | 2 | 15 | 28 | 8.9 | 6.67 | 1.80 | 0.308 | -7.08% |
| Fair | 43 | 2 | 3 | 0 | 47.1 | 37 | 17 | 16 | 5 | 23 | 46 | 8.7 | 3.04 | 1.27 | 0.213 | +0.28% |
| Suboptimal | 8 | 0 | 0 | 0 | 9.1 | 1 | 0 | 0 | 0 | 5 | 6 | 5.8 | 0.00 | 0.64 | 0.036 | +7.72% |
| Season | G | W | L | SV | IP | H | R | ER | HR | BB | K | K/9IP | ERA | WHIP | BAA | Game Rating x̄ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 35 | 0 | 0 | 0 | 33.0 | 35 | 18 | 18 | 3 | 15 | 30 | 8.2 | 4.91 | 1.52 | 0.269 | 3.62 |
| 2025 | 44 | 3 | 3 | 0 | 47.2 | 35 | 14 | 13 | 4 | 19 | 45 | 8.5 | 2.45 | 1.13 | 0.203 | 3.94 |
| 2024 | 3 | 0 | 0 | 0 | 5.1 | 1 | 3 | 3 | 0 | 5 | 6 | 10.1 | 5.06 | 1.12 | 0.059 | 3.45 |
| 2021 | 4 | 0 | 0 | 0 | 4.1 | 5 | 3 | 3 | 0 | 5 | 3 | 6.2 | 6.23 | 2.31 | 0.278 | 3.13 |
|
Date
|
Opponent | Decision | IP | H | R | ER | HR | BB | K |
Composite Score
|
Output Level
|
Game Rating
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 25, 2026 | CHC | 0.1 | 4 | 3 | 3 | 0 | 1 | 1 | Good | 0.87 | ||
| Jul 19, 2026 | @CLE | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | Fair | 4.37 | ||
| Jul 18, 2026 | @CLE | 1.0 | 1 | 0 | 0 | 0 | 0 | 2 | Fair | 4.52 | ||
| Jul 12, 2026 | MIL | 0.2 | 1 | 0 | 0 | 0 | 1 | 1 | Fair | 3.86 | ||
| Jul 11, 2026 | MIL | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | Fair | 3.93 | ||
| Jul 8, 2026 | ATL | 1.0 | 2 | 1 | 1 | 0 | 0 | 1 | Good | 3.21 | ||
| Jul 5, 2026 | @WSH | 1.0 | 2 | 0 | 0 | 0 | 0 | 1 | Good | 4.08 | ||
| Jul 3, 2026 | @WSH | 1.1 | 3 | 4 | 4 | 2 | 1 | 1 | Good | 0.37 | ||
| Jun 30, 2026 | @PHI | 0.2 | 1 | 0 | 0 | 0 | 0 | 0 | Suboptimal | 3.86 | ||
| Jun 27, 2026 | CIN | 1.0 | 0 | 0 | 0 | 0 | 0 | 2 | Good | 4.66 | ||
| Jun 26, 2026 | CIN | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | Fair | 4.37 | ||
| Jun 23, 2026 | SEA | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | Fair | 4.37 | ||
| Jun 17, 2026 | @ATH | 1.0 | 1 | 1 | 1 | 1 | 0 | 2 | Fair | 3.64 | ||
| Jun 14, 2026 | MIA | 1.1 | 0 | 0 | 0 | 0 | 2 | 1 | Fair | 3.85 | ||
| May 17, 2026 | PHI | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | Fair | 3.93 | ||
| May 16, 2026 | PHI | 1.1 | 0 | 0 | 0 | 0 | 1 | 2 | Excellent | 4.44 | ||
| May 10, 2026 | @SF | 0.1 | 3 | 2 | 2 | 0 | 0 | 0 | Good | 1.82 | ||
| May 7, 2026 | @AZ | 0.1 | 0 | 0 | 0 | 0 | 0 | 1 | Good | 4.24 | ||
| Apr 30, 2026 | STL | 0.2 | 3 | 5 | 5 | 0 | 2 | 0 | Good | -1.05 | ||
| Apr 27, 2026 | STL | 0.1 | 0 | 0 | 0 | 0 | 0 | 1 | Good | 4.24 | ||
| Apr 25, 2026 | @MIL | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | Good | 4.08 | ||
| Apr 24, 2026 | @MIL | 1.0 | 0 | 0 | 0 | 0 | 1 | 1 | Good | 4.08 | ||
| Apr 19, 2026 | TB | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | Good | 4.37 | ||
| Apr 18, 2026 | TB | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | Good | 4.08 | ||
| Apr 16, 2026 | WSH | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | Suboptimal | 3.79 | ||
| Apr 14, 2026 | WSH | 2.0 | 2 | 0 | 0 | 0 | 0 | 1 | Fair | 4.27 | ||
| Apr 11, 2026 | @CHC | 1.0 | 2 | 0 | 0 | 0 | 0 | 1 | Excellent | 4.08 | ||
| Apr 10, 2026 | @CHC | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | Fair | 3.79 | ||
| Apr 7, 2026 | SD | 0.2 | 1 | 0 | 0 | 0 | 0 | 0 | Good | 3.86 | ||
| Apr 6, 2026 | SD | 1.0 | 2 | 0 | 0 | 0 | 0 | 2 | Good | 4.37 | ||
| Apr 4, 2026 | BAL | 1.0 | 1 | 0 | 0 | 0 | 1 | 1 | Good | 3.93 | ||
| Apr 1, 2026 | @CIN | 1.1 | 1 | 0 | 0 | 0 | 0 | 0 | Good | 4.00 | ||
| Mar 30, 2026 | @CIN | 1.0 | 0 | 0 | 0 | 0 | 1 | 1 | Good | 4.08 | ||
| Mar 29, 2026 | @NYM | 1.0 | 0 | 0 | 0 | 0 | 0 | 2 | Good | 4.66 | ||
| Mar 26, 2026 | @NYM | 0.2 | 3 | 2 | 2 | 0 | 2 | 1 | Good | 1.60 | ||
| Sep 26, 2025 | @ATL | 1.0 | 2 | 1 | 1 | 0 | 0 | 0 | Fair | 2.92 | ||
| Sep 24, 2025 | @CIN | 0.2 | 1 | 1 | 1 | 1 | 1 | 0 | Fair | 2.72 | ||
| Sep 23, 2025 | @CIN | 1.0 | 1 | 0 | 0 | 0 | 0 | 0 | Fair | 3.93 | ||
| Sep 19, 2025 | ATH | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | Suboptimal | 4.08 | ||
| Sep 14, 2025 | @WSH | L | 2.0 | 1 | 1 | 0 | 0 | 1 | 1 | Fair | 4.12 | |
| Sep 10, 2025 | @BAL | 1.0 | 3 | 1 | 1 | 0 | 0 | 0 | Good | 2.78 | ||
| Sep 9, 2025 | @BAL | 1.0 | 0 | 0 | 0 | 0 | 2 | 1 | Suboptimal | 3.79 | ||
| Sep 7, 2025 | MIL | 1.0 | 0 | 0 | 0 | 0 | 2 | 1 | Fair | 3.79 | ||
| Sep 3, 2025 | LAD | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | Suboptimal | 4.37 | ||
| Sep 2, 2025 | LAD | 1.0 | 3 | 2 | 2 | 0 | 0 | 0 | Good | 1.94 | ||
| Aug 29, 2025 | @BOS | 1.0 | 1 | 0 | 0 | 0 | 0 | 1 | Fair | 4.22 | ||
| Aug 27, 2025 | @STL | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | Good | 4.37 | ||
| Aug 26, 2025 | @STL | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | Fair | 4.37 | ||
| Aug 24, 2025 | COL | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | Excellent | 4.37 | ||
| Aug 20, 2025 | TOR | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | Fair | 4.37 | ||
| Aug 17, 2025 | @CHC | L | 1.0 | 2 | 1 | 1 | 0 | 1 | 0 | Fair | 2.64 | |
| Aug 15, 2025 | @CHC | 1.2 | 2 | 0 | 0 | 0 | 1 | 1 | Fair | 3.91 | ||
| Aug 13, 2025 | @MIL | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | Fair | 4.37 | ||
| Aug 10, 2025 | CIN | 0.2 | 0 | 0 | 0 | 0 | 1 | 1 | Good | 4.01 | ||
| Aug 9, 2025 | CIN | 1.0 | 0 | 0 | 0 | 0 | 0 | 2 | Fair | 4.66 | ||
| Aug 6, 2025 | SF | 0.1 | 2 | 1 | 1 | 0 | 1 | 0 | Fair | 2.52 | ||
| Aug 3, 2025 | @COL | 1.0 | 0 | 0 | 0 | 0 | 1 | 1 | Fair | 4.08 | ||
| Jul 30, 2025 | @SF | W | 2.0 | 2 | 0 | 0 | 0 | 0 | 3 | Fair | 5.46 | |
| Jul 28, 2025 | @SF | 1.0 | 0 | 0 | 0 | 0 | 0 | 2 | Fair | 4.66 | ||
| Jul 25, 2025 | AZ | 1.0 | 2 | 0 | 0 | 0 | 0 | 1 | Good | 4.08 | ||
| Jul 22, 2025 | DET | 1.0 | 1 | 0 | 0 | 0 | 0 | 2 | Fair | 4.52 | ||
| Jul 19, 2025 | CWS | 0.1 | 2 | 2 | 2 | 0 | 1 | 1 | Fair | 1.96 | ||
| Jul 18, 2025 | CWS | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | Suboptimal | 4.08 | ||
| Jul 9, 2025 | @KC | L | 1.0 | 2 | 1 | 1 | 1 | 1 | 1 | Fair | 2.92 | |
| Jul 8, 2025 | @KC | 0.0 | 1 | 0 | 0 | 0 | 0 | 0 | Fair | 3.74 | ||
| Jul 5, 2025 | @SEA | 1.1 | 0 | 0 | 0 | 0 | 0 | 3 | Good | 5.03 | ||
| Jul 2, 2025 | STL | 1.0 | 1 | 0 | 0 | 0 | 1 | 1 | Good | 3.93 | ||
| Jul 1, 2025 | STL | W | 1.0 | 0 | 0 | 0 | 0 | 2 | 0 | Good | 4.08 | |
| Jun 27, 2025 | NYM | 1.1 | 1 | 0 | 0 | 0 | 0 | 3 | Good | 4.88 | ||
| Jun 23, 2025 | @MIL | 1.2 | 1 | 0 | 0 | 0 | 0 | 3 | Fair | 4.94 | ||
| Jun 20, 2025 | TEX | 1.1 | 1 | 0 | 0 | 0 | 1 | 1 | Fair | 4.00 | ||
| Jun 19, 2025 | @DET | 0.2 | 2 | 2 | 2 | 1 | 0 | 0 | Fair | 2.02 | ||
| Jun 15, 2025 | @CHC | 2.0 | 0 | 0 | 0 | 0 | 0 | 0 | Excellent | 4.27 | ||
| Jun 12, 2025 | @CHC | 1.2 | 0 | 0 | 0 | 0 | 1 | 1 | Suboptimal | 4.20 | ||
| Jun 10, 2025 | MIA | 2.0 | 0 | 0 | 0 | 0 | 0 | 3 | Fair | 5.16 | ||
| Jun 7, 2025 | PHI | W | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | Fair | 4.96 | |
| May 25, 2025 | MIL | 1.1 | 0 | 0 | 0 | 0 | 1 | 1 | Good | 4.14 | ||
| May 23, 2025 | MIL | 0.2 | 0 | 0 | 0 | 0 | 0 | 1 | Fair | 4.30 | ||
| May 22, 2025 | MIL | 1.0 | 1 | 1 | 1 | 1 | 0 | 2 | Fair | 3.64 | ||
| Sep 29, 2024 | @NYY | 2.0 | 0 | 0 | 0 | 0 | 1 | 3 | Suboptimal | 4.86 | ||
| Sep 24, 2024 | MIL | 1.1 | 1 | 3 | 3 | 0 | 4 | 1 | Fair | 0.64 | ||
| Sep 20, 2024 | @CIN | 2.0 | 0 | 0 | 0 | 0 | 0 | 2 | Fair | 4.86 | ||
| Oct 1, 2021 | @TOR | 1.1 | 2 | 0 | 0 | 0 | 1 | 0 | Fair | 3.56 | ||
| Aug 7, 2021 | TB | 1.0 | 2 | 2 | 2 | 0 | 2 | 2 | Fair | 2.08 | ||
| Jul 3, 2021 | @LAA | 1.1 | 0 | 0 | 0 | 0 | 1 | 1 | Fair | 4.14 | ||
| May 7, 2021 | BOS | 0.2 | 1 | 1 | 1 | 0 | 1 | 0 | Good | 2.72 |
Should Isaac get the call, he’ll be operating in a Fair window. His historical propensity in this range points toward a fairly solid outing. The Variable profile introduces some fluctuation, so there’s a bit of risk involved. Even so, he remains a viable fantasy option.
Opposing Pitcher TriSync Projection: 2.44 vs AZ