Player Information
| Team | PIT |
Pos | RP |
Age | 30 |
| Throws | R |
$/Game | -3.3 |
RCL R% | 0 |
Razzball 2026 rest of season projections for Isaac Mattson of the Pittsburgh Pirates have him as the
#525 ranked player and #146 relief pitcher (RP) worth $-9.5 in standard 12 team 5x5 mixed leagues for fantasy baseball.
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Season Stats ||
Monthly Stats ||
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2026 Fantasy Outlook
| Grey Albright's 2026 Player Summary |
|---|
Isaac Mattson Stats
| G | GS | QS | W | L | SV | HLD | IP | TBF | H | ER | HR | BB | K | ERA | FIP | WHIP | BABIP | H/9 | K/9 | BB/9 | HR/9 | K% | BB% | $ |
|---|
| Last 7 Days | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 0.7 | 5 | 3 | 2 | 0 | 0 | 1 | 27.00 | 0.03 | 4.29 | 0.750 | 38.6 | 12.9 | 0.0 | 0.0 | 20.0 | 0.0 | -24.8 |
| Last 30 Days | 11 | 0 | 0 | 0 | 0 | 0 | 3 | 8.7 | 37 | 8 | 7 | 0 | 4 | 5 | 7.27 | 3.26 | 1.38 | 0.286 | 8.3 | 5.2 | 4.1 | 0.0 | 13.5 | 10.8 | -13.4 |
| Season | 19 | 0 | 0 | 0 | 0 | 0 | 7 | 17.3 | 77 | 18 | 9 | 0 | 9 | 13 | 4.67 | 3.18 | 1.56 | 0.327 | 9.4 | 6.8 | 4.7 | 0.0 | 16.9 | 11.7 | -17.6 |
| ROS Proj | 48 | 0 | 0 | 2 | 3 | 1 | 14 | 48.0 | 210 | 44 | 24 | 6 | 23 | 43 | 4.46 | 4.61 | 1.40 | 0.281 | 8.3 | 8.1 | 4.3 | 1.1 | 20.3 | 11.0 | -9.2 |
Isaac Mattson 2026 Projections | Preseason
Isaac Mattson daily MLB projections and fantasy value for probable starts in next 7-10 days. LU=Lineup. If the lineup has been released and incorporated into the projections, it is listed as "Live".
Isaac Mattson daily fantasy baseball projections for DFS sites such as DraftKings and FanDuel. LU=Lineup. If the lineup has been released and incorporated into the projections, it is listed as "Live".
Isaac Mattson Game Log | Games Started
| OPP | DEC | IP | BF | PC | H | R | ER | BB | K | ERA | FIP | WHIP | BABIP | HR | Proj $ | Act $ |
|---|
Isaac Mattson Game Log | Last 30 Day Relief Appearances
| OPP | DEC | IPStart | IP | BF | PC | H | R | ER | BB | K | HR | ERA | FIP | WHIP | $ |
|---|
| May 10 | @SF | BSV | 6 | 0.3 | 4 | 18 | 3 | 2 | 2 | 0 | 0 | 0 | 60.00 | 0.00 | 9.00 | -99.9 |
| May 7 | @ARI | HLD | 8 | 0.3 | 1 | 6 | 0 | 0 | 0 | 0 | 1 | 0 | 0.00 | 0.00 | 0.00 | -12.9 |
| Apr 30 | STL | | 8 | 0.7 | 7 | 31 | 3 | 5 | 5 | 2 | 0 | 0 | 64.29 | 0.00 | 7.50 | -99.9 |
| Apr 27 | STL | HLD | 7 | 0.3 | 1 | 3 | 0 | 0 | 0 | 0 | 1 | 0 | 0.00 | 0.00 | 0.00 | -12.9 |
| Apr 25 | @MIL | BSV | 6 | 1.0 | 3 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0.00 | 3.15 | 0.00 | -14.6 |
| Apr 24 | @MIL | | 9 | 1.0 | 4 | 14 | 0 | 0 | 0 | 1 | 1 | 0 | 0.00 | 4.13 | 1.00 | -7.3 |
| Apr 19 | TB | HLD | 8 | 1.0 | 3 | 8 | 0 | 0 | 0 | 0 | 1 | 0 | 0.00 | 1.13 | 0.00 | -7.0 |
| Apr 18 | TB | | 10 | 1.0 | 3 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0.00 | 3.12 | 0.00 | -14.6 |
| Apr 16 | WSH | | 8 | 1.0 | 4 | 18 | 0 | 0 | 0 | 1 | 0 | 0 | 0.00 | 6.16 | 1.00 | -14.8 |
| Apr 14 | WSH | | 8 | 2.0 | 7 | 33 | 2 | 0 | 0 | 0 | 1 | 0 | 0.00 | 2.16 | 1.00 | -3.3 |
| Apr 11 | @CHC | HLD | 8 | 1.0 | 5 | 24 | 2 | 0 | 0 | 0 | 1 | 0 | 0.00 | 1.12 | 2.00 | -7.5 |
| Apr 10 | @CHC | HLD | 7 | 1.0 | 4 | 12 | 0 | 0 | 0 | 1 | 0 | 0 | 0.00 | 6.15 | 1.00 | -14.8 |
| Apr 7 | SD | HLD | 7 | 0.7 | 3 | 9 | 1 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0.00 | 1.50 | -17.5 |
| Apr 6 | SD | | 7 | 1.0 | 5 | 21 | 2 | 0 | 0 | 0 | 2 | 0 | 0.00 | -0.83 | 2.00 | 0.0 |
| Apr 4 | BAL | | 8 | 1.0 | 4 | 17 | 1 | 0 | 0 | 1 | 1 | 0 | 0.00 | 4.19 | 2.00 | -7.5 |
| Apr 1 | @CIN | HLD | 6 | 1.3 | 5 | 22 | 1 | 0 | 0 | 0 | 0 | 0 | 0.00 | 3.17 | 0.75 | -12.3 |
| Mar 30 | @CIN | | 7 | 1.0 | 4 | 15 | 0 | 0 | 0 | 1 | 1 | 0 | 0.00 | 4.21 | 1.00 | -7.3 |
| Mar 29 | @NYM | | 8 | 1.0 | 3 | 13 | 0 | 0 | 0 | 0 | 2 | 0 | 0.00 | -0.86 | 0.00 | 0.5 |
| Mar 26 | @NYM | | 5 | 0.7 | 7 | 36 | 3 | 2 | 2 | 2 | 1 | 0 | 25.71 | 0.00 | 7.50 | -99.9 |
Isaac Mattson Stats | Season
Isaac Mattson stats and 5x5 fantasy value from 2013-2026.
| Period | Team | G | GS | QS | W | L | SV | HLD | BF | IP | H | ER | HR | BB | K | ERA | FIP | WHIP | BABIP | HR/9 | BB/9 | K/9 | $ |
|---|
| 2013 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 2014 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 2015 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 2016 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 2017 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 2018 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 2019 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 2020 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 2021 | BAL | 4 | 0 | 0 | 0 | 0 | 0 | 0 | | 4.0 | 5 | 3 | 0 | 5 | 3 | 6.23 | 5.25 | 2.31 | | 0.0 | 10.4 | 6.2 | -18.9 |
| 2022 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 2023 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 2024 | PIT | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 23 | 5.0 | 1 | 3 | 0 | 5 | 6 | 5.06 | 4.29 | 1.13 | 0.091 | 0.0 | 8.5 | 10.2 | -15.3 |
| 2025 | PIT | 44 | 0 | 0 | 3 | 3 | 0 | 12 | 198 | 48.0 | 35 | 13 | 4 | 19 | 45 | 2.45 | 3.66 | 1.13 | 0.246 | 0.8 | 3.6 | 8.5 | -6.0 |
| 2026 | PIT | 19 | 0 | 0 | 0 | 0 | 0 | 7 | 77 | 17.0 | 18 | 9 | 0 | 9 | 13 | 4.67 | 3.18 | 1.56 | 0.327 | 0.0 | 4.7 | 6.8 | -17.6 |
Isaac Mattson Stats | Monthly
Isaac Mattson 2026 fantasy value by month for 5x5 leagues.
| G | GS | QS | W | L | SV | HLD | IP | H | ER | K | BB | ERA | FIP | WHIP | BABIP | H/9 | K/9 | BB/9 | HR/9 | $ | $/G$ |
|---|
| April | 13 | 0 | 0 | 0 | 0 | 0 | 6 | 13.3 | 9 | 0 | 8 | 4 | 0.00 | 2.73 | 0.98 | 0.231 | 6.1 | 5.4 | 2.7 | 0.0 | -1.5 | -5.6 |
| May | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 0.7 | 3 | 2 | 1 | 0 | 27.00 | 0.03 | 4.50 | 0.750 | 9.9 | 13.5 | 0.0 | 0.0 | -21.8 | -24.5 |
Isaac Mattson Fantasy Baseball | Rest of Season Player Rater
Isaac Mattson Fantasy Baseball | Rest of Season Player Rater (non-standard 5x5)
Isaac Mattson Fantasy Baseball | Preseason Player Rater
Isaac Mattson Fantasy Baseball | Preseason Player Rater (non-standard 5x5)
Isaac Mattson 2026 Projections | Preseason
Isaac Mattson Fantasy Outlook For 2026
| Grey Albright Player Summary |
|---|
Player data for Isaac Mattson maintained by Rudy Gamble | Updated: 2026-05-13 09:55:20 PM EST
