P Isaac Mattson #20
Age: 30 | Bats: R | Throws: R | Morale: Normal
03/07/2026
BNN Index | | SCORES | STANDINGS | STATS | TEAMS | PLAYERS | TRANSACTIONS | HISTORY
P ISAAC MATTSON #20 - AGE: 30 - BATS: R - THROWS: R - MORALE: NORMAL
G GS Rec SV ERA IP HA HR BB K WHIP WAR
4 0 0-1 0 59.40 1.2 7 2 9 1 9.60 -0.5
PITCHING RATINGS (OSA)
Overall Overall Vs Left Vs Right
Stuff 45 45 45
Movement 45 45 45
HRA 45 45 50
PBABIP 45 45 50
Control 40 40 40
PITCHING RATINGS
Pitch Cur. Pot.
Fastball 60 -
Slider 50 -
Curveball 45 -
Changeup 45 -
 
OTHER PITCHING RATINGS
Velocity 93-95 Mph
Stamina 35
Suggested Role Bullpen
Type Flyball Pitcher
Hold Runners 35
Defense 65
RUN/BUNT RATINGS
Running Speed: 30
Stealing Ability: 25
Baserunning Inst.: 30
Sacrifice Bunt: 50
Bunt for Hit: 30
   
GAME LOG, LAST 10 GAMES
Date Vs. Result Start IP H R ER BB K Dec
09/07/2025 @ FMJ Loss, 6-7 1.2 2 1 1 1 0 Loss
08/31/2025 SB Loss, 4-12 0.2 2 5 5 6 0
08/26/2025 MER Win, 4-3 1.0 0 0 0 1 1 Save
08/25/2025 MER Win, 8-7 1.0 3 3 3 1 1 Win
08/21/2025 @ LAN Win, 4-1 0.2 0 0 0 0 1
08/15/2025 PVO Win, 6-4 1.2 2 0 0 1 4
08/14/2025 PVO Loss, 1-2 1.0 0 0 0 0 2
08/12/2025 @ MV Loss, 5-10 0.2 2 3 3 1 1
08/08/2025 FMJ Loss, 6-17 3.0 5 4 3 2 0
08/06/2025 @ SM Loss, 6-7 1.1 1 1 1 2 1 Loss
Birthday:07/14/1995
Born in:Unknown
Nationality:American
Height:6' 3"
Weight:210 lbs
Local Popularity:Unknown
National Pop.:Unknown
STATUS
Contract:None, Free Agent
Salary:-
Signed Through:-
Major Service:
Service This Yr:
40-Man Service:
Pro Service:
Arbitration Eligibility:
Option Years:
Contract Extension:
Drafted:-
CALIFORNIA LEAGUE 2025 PITCHING STATS
Pitching G GS W L SV ERA IP HA R ER HR BB K CG CG% SHO QS QS%
Overall 20 0 4 4 4 8.89 27.1 32 28 27 4 28 22 0 0.0 0 0 0.0
Pitching SVO BS SV% RA GF BR/9 H/9 K/9 BB/9 FIP WHIP FIP- WAR BABIP        
Overall 6 2 66.7 20 12 19.76 10.54 7.24 9.22 7.10 2.20 118 -0.3 .346        
Pitching AB H 2B 3B HR R BB K SF SH HP AVG OBP SLG OPS      
vs. LHB 55 17 1 0 4 13 13 11 1 0 0 .309 .435 .545 .980      
vs. RHB 50 15 4 0 0 15 15 11 1 0 0 .300 .455 .380 .835      
CALIFORNIA LEAGUE 2025 PITCHING SPLITS
Split G GS W L SV ERA IP HA R ER HR BB K  
April 5 0 1 0 2 1.29 7.0 3 1 1 0 5 4  
May 4 0 2 1 1 5.40 6.2 8 4 4 1 5 5  
July 1 0 0 1 0 54.00 1.0 4 6 6 1 3 2  
August 9 0 1 1 1 12.27 11.0 15 16 15 2 14 11  
September 1 0 0 1 0 5.40 1.2 2 1 1 0 1 0  
Last Year 20 0 4 4 4 8.89 27.1 32 28 27 4 28 22  
2 Years Ago 3 0 0 1 0 8.10 6.2 7 6 6 1 9 5  
Career 76 19 10 17 9 7.97 157.0 199 144 139 21 116 123  
Home 11 0 2 1 2 9.92 16.1 21 19 18 3 19 15  
Road 9 0 2 3 2 7.36 11.0 11 9 9 1 9 7  
Grass 20 0 4 4 4 8.89 27.1 32 28 27 4 28 22  
Day 5 0 1 0 1 12.71 5.2 5 8 8 0 9 3  
Night 15 0 3 4 3 7.89 21.2 27 20 19 4 19 19  
As Reliever / Substitution 20 0 4 4 4 8.89 27.1 32 28 27 4 28 22  
PIONEER LEAGUE 2025 PITCHING STATS
Pitching G GS W L SV ERA IP HA R ER HR BB K CG CG% SHO QS QS%
Overall 4 0 0 1 0 59.40 1.2 7 16 11 2 9 1 0 0.0 0 0 0.0
Pitching SVO BS SV% RA GF BR/9 H/9 K/9 BB/9 FIP WHIP FIP- WAR BABIP        
Overall 1 1 0.0 4 1 91.80 37.80 5.40 48.60 37.14 9.60 475 -0.5 .500        
Pitching AB H 2B 3B HR R BB K SF SH HP AVG OBP SLG OPS      
vs. LHB 7 4 2 0 0 5 5 0 0 0 1 .571 .769 .857 1.626      
vs. RHB 6 3 0 0 2 11 4 1 0 0 0 .500 .700 1.500 2.200      
PIONEER LEAGUE 2025 PITCHING SPLITS
Split G GS W L SV ERA IP HA R ER HR BB K  
June 1 0 0 0 0 162.00 0.1 3 6 6 0 3 0  
July 3 0 0 1 0 33.75 1.1 4 10 5 2 6 1  
Last Year 4 0 0 1 0 59.40 1.2 7 16 11 2 9 1  
Career 4 0 0 1 0 59.40 1.2 7 16 11 2 9 1  
Home 1 0 0 0 0 67.50 0.2 3 5 5 1 3 1  
Road 3 0 0 1 0 54.00 1.0 4 11 6 1 6 0  
Grass 4 0 0 1 0 59.40 1.2 7 16 11 2 9 1  
Night 4 0 0 1 0 59.40 1.2 7 16 11 2 9 1  
As Reliever / Substitution 4 0 0 1 0 59.40 1.2 7 16 11 2 9 1  
CAREER PITCHING STATS
Year/Team/League Age G GS W L SV ERA IP HA R ER HR BB K CG SHO WHIP BABIP FIP WAR ERA+
2022 Houston - CBA 26 78 1 10 3 3 3.34 97.0 73 38 36 7 39 81 0 0 1.15 .245 3.57 0.8 115
Total CBA 78 1 10 3 3 3.34 97.0 73 38 36 7 39 81 0 0 1.15 .245 3.57 0.8 115
CAREER MINOR LEAGUE PITCHING STATS
Year/Team/League Age G GS W L SV ERA IP HA R ER HR BB K CG SHO WHIP BABIP FIP WAR ERA+
2018 Riverside - A 22 25 0 3 3 5 7.30 24.2 34 20 20 1 14 21 0 0 1.95 .423 4.16 0.6 78
2019 Nassau - A 23 8 2 0 1 1 7.41 17.0 20 16 14 4 12 20 0 0 1.88 .356 6.55 -0.1 72
2019 Riverside - A 23 28 19 3 9 0 7.87 98.1 126 90 86 15 65 75 0 0 1.94 .354 6.25 0.5 71
2019 Total - A 23 36 21 3 10 1 7.80 115.1 146 106 100 19 77 95 0 0 1.93 .354 6.30 0.5 71
2020 Plano-Frisco - AA 24 55 0 5 1 14 3.14 63.0 58 25 22 1 33 47 0 0 1.44 .308 4.56 1.7 221
2021 Nassau - A 25 40 3 2 2 7 1.52 59.1 47 15 10 1 28 65 0 0 1.26 .301 2.28 1.8 266
2021 Plano-Frisco - AA 25 2 0 0 0 0 4.91 3.2 4 2 2 1 1 5 0 0 1.36 .333 4.90 0.0 103
2024 Nassau - A 28 40 0 1 2 2 6.25 63.1 72 44 44 8 61 75 0 0 2.10 .383 5.81 -0.2 84
2024 Riverside - A 28 3 0 0 1 0 8.10 6.2 7 6 6 1 9 5 0 0 2.40 .273 6.82 -0.2 55
2024 Total - A 28 43 0 1 3 2 6.43 70.0 79 50 50 9 70 80 0 0 2.13 .370 5.91 -0.3 80
2025 Walla Walla - R 29 4 0 0 1 0 59.40 1.2 7 16 11 2 9 1 0 0 9.60 .500 37.14 -0.5 13
2025 Riverside - A 29 20 0 4 4 4 8.89 27.1 32 28 27 4 28 22 0 0 2.20 .346 7.10 -0.3 67
Total TL 57 0 5 1 14 3.24 66.2 62 27 24 2 34 52 0 0 1.44 .309 4.58 207.8
Total CAL 76 19 10 17 9 7.97 157.0 199 144 139 21 116 123 0 0 2.01 .360 6.10 70.4
Total SAL 88 5 3 5 10 4.38 139.2 139 75 68 13 101 160 0 0 1.72 .345 4.40 114.7
Total Pio 4 0 0 1 0 59.40 1.2 7 16 11 2 9 1 0 0 9.60 .500 37.14 13.1
CAREER POSTSEASON PITCHING STATS
Year/Team/League Age G GS W L SV ERA IP HA R ER HR BB K CG SHO WHIP BABIP FIP WAR ERA+
2019 Nassau - SAL 23 2 0 0 0 0 27.00 1.0 2 3 3 0 4 1 0 0 6.00 .667 10.55 -0.0 20
2020 Plano-Frisco - TL 24 2 0 0 0 1 0.00 5.0 4 0 0 0 1 6 0 0 1.00 .364 2.38 0.3 999
2021 Plano-Frisco - TL 25 3 0 0 0 1 4.76 5.2 5 3 3 1 2 6 0 0 1.24 .286 4.50 0.1 106
2022 Houston - CBA 26 1 0 0 0 0 0.00 1.1 0 0 0 0 0 1 0 0 0.00 .000 1.56 0.0 999
2024 Nassau - SAL 28 3 0 1 0 0 3.00 6.0 4 2 2 1 5 7 0 0 1.50 .231 5.46 0.0 174
Total CBA 1 0 0 0 0 0.00 1.1 0 0 0 0 0 1 0 0 0.00 .000 1.56 999.0
Total TL 5 0 0 0 2 2.53 10.2 9 3 3 1 3 12 0 0 1.12 .320 3.51 199.8
Total SAL 5 0 1 0 0 6.43 7.0 6 5 5 1 9 8 0 0 2.14 .312 6.19 82.3
CAREER FIELDING STATS
Year/Team/League POS G GS PO A DP TC E PCT INN RNG ZR EFF PB RSTA RTO RTO%
2018 Riverside - A P 25 0 4 6 1 10 0 1.000 24.2 3.65 +0.5 1.089
2019 Riverside - A P 28 19 2 14 1 17 1 .941 98.1 1.46 +0.8 .887
2019 Nassau - A P 8 2 0 0 0 0 0 .000 17.0 0.00 -0.6 .000
2020 Plano-Frisco - AA P 55 0 4 8 0 12 0 1.000 63.0 1.71 -0.3 1.312
2021 Plano-Frisco - AA P 2 0 0 0 0 0 0 .000 3.2 0.00 -0.2 .000
2021 Nassau - A P 39 3 1 2 0 3 0 1.000 59.1 0.46 +0.9 .983
2022 Houston - MLB P 78 1 3 8 0 12 1 .917 97.0 1.02 +0.6 .919
2024 Riverside - A P 3 0 0 0 0 0 0 .000 6.2 0.00 -0.9 .000
2024 Nassau - A P 39 0 6 3 0 9 0 1.000 63.1 1.28 +0.2 1.491
2025 Riverside - A P 20 0 0 1 0 1 0 1.000 27.1 0.33 -0.2 .000
2025 Walla Walla - R P 4 0 0 0 0 1 1 .000 1.2 0.00 -0.8 .000
TOTAL P 301 25 20 42 2 65 3 .954 462.0 1.21 -0.0 1.016
PLAYER HISTORY
09/22/2024 Wins the 2024 South Atlantic League Round 2 with the Nassau Thunderballs!
01/01/2025 OSA scouting updated ratings: Stuff: 55; Movement: 45; Control: 30.
01/01/2025 OSA scouting updated ratings: Stuff: 55; Movement: 45; Control: 30.
11/04/2025 Released by the Houston organization.
01/01/2026 OSA scouting updated ratings: Stuff: 45; Movement: 40; Control: 25.
LEADERBOARD APPEARANCES
Year G Rank
2022 78 5
Year RA Rank
2022 77 6
Sunday, March 22nd , 2026 - OOTP Baseball 27.1 Build 44