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Isaac Mattson
Pittsburgh Pirates · RHP
#
72
Team
PIT · P
Debut
2021 · 6 MLB seasons

Isaac Mattson

Age 31
Contract Value $692,261/yr
Size 6' 2" · 214
Throws RHP
Bats Right
From Erie, PA
0-0 W-L
Team profile →Rotation →
4.93
ERA
1.56
WHIP
8.6
K/9
4.2
BB/9
34.2
Innings
0
Starts
Isaac Mattson season snapshot
Season stats
ERA
4.93
WHIP
1.56
K/9
8.6
BB/9
4.2
HR/9
0.78
IP
34.2
GS
0
W-L
0-0
Isaac Mattson ERA trend
Last 6
Earned runs per start
Avg 0.7 ER / start
↑ ERA trending up over recent starts.

Isaac Mattson game log

2026 season
DateOpponentIPHERKBBERA
Jul 28Arizona Diamondbacks1.231317.50
Jul 25Chicago Cubs0.14311270.00
Jul 19Cleveland Guardians100100.00
Jul 18Cleveland Guardians110200.00
Jul 12Milwaukee Brewers0.210110.00
Jul 11Milwaukee Brewers110000.00
Jul 8Atlanta Braves121109.00
Jul 5Washington Nationals120100.00
Jul 3Washington Nationals1.1341132.73
Jun 30Philadelphia Phillies0.210000.00
Jun 27Cincinnati Reds100200.00
Jun 26Cincinnati Reds100100.00
Jun 23Seattle Mariners100100.00
Jun 17Athletics111209.00
Jun 14Miami Marlins1.100120.00
May 17Philadelphia Phillies110000.00
May 16Philadelphia Phillies1.100210.00
May 10San Francisco Giants0.13200180.00
May 7Arizona Diamondbacks0.100100.00
Apr 30St. Louis Cardinals0.23502225.00
Apr 27St. Louis Cardinals0.100100.00
Apr 25Milwaukee Brewers100000.00
Apr 24Milwaukee Brewers100110.00
Apr 19Tampa Bay Rays100100.00
Apr 18Tampa Bay Rays100000.00
Apr 16Washington Nationals100010.00
Apr 14Washington Nationals220100.00
Apr 11Chicago Cubs120100.00
Apr 10Chicago Cubs100010.00
Apr 7San Diego Padres0.210000.00
Apr 6San Diego Padres120200.00
Apr 4Baltimore Orioles110110.00
Apr 1Cincinnati Reds1.110000.00
Mar 30Cincinnati Reds100110.00
Mar 29New York Mets100200.00
Mar 26New York Mets0.2321290.00

Isaac Mattson season splits

Home / away / vs L-R · 2026
Home ERA
ERA2.93
Away ERA
ERA4.35
vs Left AVG
AVG0.220
vs Right AVG
AVG0.222
Isaac Mattson monthly splits
ERA · IP · K · BB · WHIP per month
MonthGSERAIPKBBWHIP
Mar06.752.2432.25
Apr03.2114.0861.29
May06.003.0311.67
Jun01.506.0720.67
Jul09.009.01142.33
Pitch arsenal
Usage and average velocity · 2026
FFFour-seam FB
70.7%94.1 mph
SLSlider
11.9%84.2 mph
CHChangeup
9.7%86.0 mph
STSweeper
7.7%82.9 mph

Performance vs teams

2026 starts · sorted by ERA
TeamERAGS
Cleveland Guardians
0.00
2
Milwaukee Brewers
0.00
4
Philadelphia Phillies
0.00
3
Cincinnati Reds
0.00
4
Seattle Mariners
0.00
1
Miami Marlins
0.00
1
Tampa Bay Rays
0.00
2
San Diego Padres
0.00
2
Baltimore Orioles
0.00
1
Arizona Diamondbacks
6.92
2
Washington Nationals
7.06
4
Atlanta Braves
9.00
1
Athletics
9.00
1
Chicago Cubs
12.86
3
New York Mets
15.00
2
St. Louis Cardinals
150.00
2
San Francisco Giants
180.00
1

Hot / Cold zones

Opponent results by strike zone area

AVG by zone

  • Zone 01: .000
  • Zone 02: .353
  • Zone 03: .000
  • Zone 04: .455
  • Zone 05: .158
  • Zone 06: .333
  • Zone 07: .364
  • Zone 08: .643
  • Zone 09: .182
  • Zone 11: .167
  • Zone 12: .250
  • Zone 13: 1.000
  • Zone 14: .167

OPS by zone

  • Zone 01: .077
  • Zone 02: .824
  • Zone 03: .000
  • Zone 04: 1.091
  • Zone 05: .368
  • Zone 06: .778
  • Zone 07: 1.000
  • Zone 08: 1.857
  • Zone 09: .455
  • Zone 11: .692
  • Zone 12: .875
  • Zone 13: 2.000
  • Zone 14: .500

SLG by zone

  • Zone 01: .000
  • Zone 02: .471
  • Zone 03: .000
  • Zone 04: .636
  • Zone 05: .211
  • Zone 06: .444
  • Zone 07: .636
  • Zone 08: 1.214
  • Zone 09: .273
  • Zone 11: .167
  • Zone 12: .625
  • Zone 13: 1.000
  • Zone 14: .167

OBP by zone

  • Zone 01: .077
  • Zone 02: .353
  • Zone 03: .000
  • Zone 04: .455
  • Zone 05: .158
  • Zone 06: .333
  • Zone 07: .364
  • Zone 08: .643
  • Zone 09: .182
  • Zone 11: .615
  • Zone 12: .250
  • Zone 13: 1.000
  • Zone 14: .375

earnedRunAverage by zone

  • Zone 01: -
  • Zone 02: -
  • Zone 03: -
  • Zone 04: -
  • Zone 05: -
  • Zone 06: -
  • Zone 07: -
  • Zone 08: -
  • Zone 09: -
  • Zone 11: -
  • Zone 12: -
  • Zone 13: -
  • Zone 14: -

numberOfPitches by zone

  • Zone 01: 45.00
  • Zone 02: 49.00
  • Zone 03: 24.00
  • Zone 04: 36.00
  • Zone 05: 59.00
  • Zone 06: 27.00
  • Zone 07: 27.00
  • Zone 08: 34.00
  • Zone 09: 32.00
  • Zone 11: 148.00
  • Zone 12: 57.00
  • Zone 13: 47.00
  • Zone 14: 63.00

numberOfStrikes by zone

  • Zone 01: 38.00
  • Zone 02: 32.00
  • Zone 03: 17.00
  • Zone 04: 27.00
  • Zone 05: 43.00
  • Zone 06: 19.00
  • Zone 07: 17.00
  • Zone 08: 20.00
  • Zone 09: 26.00
  • Zone 11: 38.00
  • Zone 12: 18.00
  • Zone 13: 10.00
  • Zone 14: 9.00
0.4000.3000.200
1.000.167.250.167.000.353.000.455.158.333.364.643.182
0.4000.3000.200

Last 10 matchups

vs Arizona Diamondbacks — 2026-07-28
1ER · 1.2ip
→
vs Chicago Cubs — 2026-07-25
3ER · 0.1ip
→
vs Cleveland Guardians — 2026-07-19
0ER · 1ip
→
vs Cleveland Guardians — 2026-07-18
0ER · 1ip
→
vs Milwaukee Brewers — 2026-07-12
0ER · 0.2ip
→
vs Milwaukee Brewers — 2026-07-11
0ER · 1ip
→
vs Atlanta Braves — 2026-07-08
1ER · 1ip
→
vs Washington Nationals — 2026-07-05
0ER · 1ip
→
vs Washington Nationals — 2026-07-03
4ER · 1.1ip
→
vs Philadelphia Phillies — 2026-06-30
0ER · 0.2ip
→

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