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Isaac Mattson
RP · 
Pittsburgh Pirates · #72
Bats/ThrowsR/R
Height6' 2"
Weight214 lbs
BirthplaceErie, PA
MLB Debut2022
Draft2017: Rd 19, Pk 565 (LAA)
🪪Bio
Bats/ThrowsR/R
Height6' 2"
Weight214 lbs
BirthplaceErie, PA
MLB Debut2022
Draft2017: Rd 19, Pk 565 (LAA)
📊Season Stats (2026)
ERA5.35
W-L0-0
IP38.2
K36
WHIP1.60
SV0
Full Stat Line
G38
GS0
QS0
HLD8
H44
ER23
HR3
BB18
K/98.38
WAR-0.01
🤚Career Splits by Handedness
vs Left-Handed Batters
AVG.339
OBP.408
SLG.597
OPS1.005
vs Right-Handed Batters
AVG.212
OBP.293
SLG.346
OPS.639
Career totals from real plate-appearance data — lower OPS allowed is better for a pitcher.
⚔️This Season vs. Each Opponent
| Opponent | ERA | IP | K | BB | Opp AVG |
|---|---|---|---|---|---|
vs. WSH
|
6.75 | 5.1 | 3 | 2 | .333 |
vs. CIN
|
0.00 | 4.1 | 4 | 1 | .071 |
vs. MIL
|
0.00 | 3.2 | 2 | 2 | .167 |
vs. PHI
|
0.00 | 3.0 | 2 | 1 | .182 |
vs. CHC
|
11.57 | 2.1 | 2 | 2 | .462 |
vs. ARI
|
4.50 | 2.0 | 4 | 1 | .333 |
vs. CLE
|
0.00 | 2.0 | 3 | 0 | .143 |
vs. DET
|
4.50 | 2.0 | 1 | 2 | .250 |
vs. LAA
|
13.50 | 2.0 | 2 | 0 | .400 |
vs. TB
|
0.00 | 2.0 | 1 | 0 | .000 |
vs. NYM
|
10.80 | 1.2 | 3 | 2 | .375 |
vs. SD
|
0.00 | 1.2 | 2 | 0 | .375 |
vs. MIA
|
0.00 | 1.1 | 1 | 2 | .000 |
vs. ATL
|
9.00 | 1.0 | 1 | 0 | .400 |
vs. BAL
|
0.00 | 1.0 | 1 | 1 | .333 |
vs. OAK
|
9.00 | 1.0 | 2 | 0 | .250 |
vs. SEA
|
0.00 | 1.0 | 1 | 0 | .000 |
vs. STL
|
45.00 | 1.0 | 1 | 2 | .500 |
vs. SF
|
54.00 | 0.1 | 0 | 0 | .750 |
🏟️This Season at Each Ballpark
| Ballpark | ERA | IP | K | BB | Opp AVG |
|---|---|---|---|---|---|
| Total | 5.35 | 38.2 | 36 | 18 | .282 |
| PNC Park | 5.25 | 24.0 | 22 | 12 | .278 |
| Great American | 0.00 | 2.1 | 1 | 1 | .125 |
| Nationals Park | 15.43 | 2.1 | 2 | 1 | .455 |
| Progressive Field | 0.00 | 2.0 | 3 | 0 | .143 |
| Wrigley Field | 0.00 | 2.0 | 1 | 1 | .250 |
| Citi Field | 10.80 | 1.2 | 3 | 2 | .375 |
| Citizens Bank Park | 0.00 | 0.2 | 0 | 0 | .333 |
| AT&T Park | 54.00 | 0.1 | 0 | 0 | .750 |
| Chase Field | 0.00 | 0.1 | 1 | 0 | .000 |
📅By Month & Recent Form
| Split | ERA | IP | K | BB | Opp AVG |
|---|---|---|---|---|---|
| Last 7 Days | 13.50 | 2.0 | 2 | 0 | .400 |
| Last 15 Days | 13.50 | 2.0 | 2 | 0 | .400 |
| Last 30 Days | 9.00 | 4.0 | 3 | 2 | .333 |
| March | 6.75 | 2.2 | 4 | 3 | .273 |
| April | 3.21 | 14.0 | 8 | 6 | .235 |
| May | 6.00 | 3.0 | 3 | 1 | .308 |
| June | 1.50 | 6.0 | 7 | 2 | .100 |
| July | 9.00 | 9.0 | 11 | 4 | .395 |
| August | 4.50 | 2.0 | 1 | 2 | .250 |
| September | 13.50 | 2.0 | 2 | 0 | .400 |
🎯Pitch Arsenal (2026)
| Type | Pitches | Usage% | Zone% | Chase% | Whiff% | BA | wOBA | xwOBA |
|---|---|---|---|---|---|---|---|---|
| 4-Seam Fastball | 513 | 70.5% | 29.6% | 28.6% | 20.4% | .262 | .440 | .386 |
| Slider | 79 | 10.8% | 45.6% | 24.3% | 29.7% | .333 | .413 | .377 |
| Changeup | 71 | 9.8% | 18.3% | 33.3% | 13.3% | .429 | .150 | .256 |
| Sweeper | 38 | 5.2% | 55.3% | 22.7% | 27.3% | .308 | .386 | .316 |
| Curveball | 27 | 3.7% | 18.5% | 20.0% | 20.0% | .333 | .000 | .162 |
🌀Pitch Movement (2026)
| Type | # | Velo | Spin | IVB | H-Break | Ext |
|---|---|---|---|---|---|---|
| 4-Seam Fastball | 280 | 94.2 | 2,334 | +17.5" | +0.8" | 6.7 |
| Slider | 47 | 84.9 | 2,183 | +3.2" | -0.3" | 6.5 |
| Changeup | 38 | 85.5 | 1,126 | +4.2" | +0.7" | 6.7 |
| Sweeper | 22 | 82.9 | 2,359 | -1.6" | -0.8" | 6.5 |
| Curveball | 12 | 83.7 | 2,201 | -1.0" | -0.4" | 6.6 |
IVB = induced vertical break (gravity removed) · H-Break = horizontal movement · Ext = release extension in feet.
📋Recent Game Log
| Date | Opp | Score | IP | H | ER | BB | K | ERA | PC | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| L | Saturday, September 5, 2026 |
LAA
|
6-1 | 2.0 | 4 | 3 | 0 | 2 | 5.35 | 39 | — |
| L | Monday, August 17, 2026 |
DET
|
8-5 | 2.0 | 2 | 1 | 2 | 1 | 4.91 | 41 | — |
| L | Tuesday, July 28, 2026 |
ARI
|
8-7 | 1.2 | 3 | 1 | 1 | 3 | 4.93 | 39 | — |
| L | Saturday, July 25, 2026 |
CHC
|
11-0 | 0.1 | 4 | 3 | 1 | 1 | 4.91 | 26 | — |
| W | Sunday, July 19, 2026 |
CLE
|
7-1 | 1.0 | 0 | 0 | 0 | 1 | 4.13 | 13 | — |
| W | Saturday, July 18, 2026 |
CLE
|
7-1 | 1.0 | 1 | 0 | 0 | 2 | 4.26 | 20 | — |
| W | Sunday, July 12, 2026 |
MIL
|
5-14 | 0.2 | 1 | 0 | 1 | 1 | 4.40 | 18 | — |
| W | Saturday, July 11, 2026 |
MIL
|
2-3 | 1.0 | 1 | 0 | 0 | 0 | 4.50 | 24 | — |
| L | Wednesday, July 8, 2026 |
ATL
|
3-0 | 1.0 | 2 | 1 | 0 | 1 | 4.66 | 12 | — |
| W | Sunday, July 5, 2026 |
WSH
|
11-5 | 1.0 | 2 | 0 | 0 | 1 | 4.50 | 12 | — |
👥Team — Pittsburgh Pirates
See the Full Analysis
Key Suspects, player props, DFS rankings, and matchup intelligence for Isaac Mattson and every MLB game — available in the BlowOutAlert workspace.