P Mark Williamson #29
Age: 23 | Bats: R | Throws: R | Morale: Normal    
12/31/2025
BNN Index | | SCORES | STANDINGS | STATS | TEAMS | PLAYERS | TRANSACTIONS | HISTORY
P MARK WILLIAMSON #29 - AGE: 23 - BATS: R - THROWS: R - MORALE: NORMAL
G GS Rec SV ERA IP HA HR BB K WHIP WAR
37 0 3-4 5 7.76 53.1 65 5 48 47 2.12 -0.5
PITCHING RATINGS (OSA)
Pot. Overall Vs Left Vs Right Pot.
Stuff 8
Movement 6
Control 9
PITCHING RATINGS
Pitch Cur. Pot.
Fastball - 8
Slider - 9
Curveball - 7
Changeup - 6
Forkball - 8
Circle Change - 6
OTHER PITCHING RATINGS
Velocity 89-91 Mph
Stamina 18
Suggested Role Strictly BP
Groundball Percentage 40 %
Hold Runners 12
Defense 5
RUN/BUNT RATINGS
Running Speed: 3
Stealing Ability: 1
Baserunning Inst.: 3
Sacrifice Bunt: 8
Bunt for Hit: 1
   
GAME LOG, LAST 10 GAMES
Date Vs. Result Start IP H R ER BB K Dec
07/09/2025 @ MONT Loss, 5-6 2.1 4 2 2 4 4 Loss
07/07/2025 NAN Win, 4-1 0.2 0 0 0 0 2 Save
07/05/2025 NAN Loss, 6-10 0.2 0 0 0 0 1
07/03/2025 NAN Loss, 5-10 0.2 2 5 5 3 0
06/30/2025 ATH Win, 10-6 1.1 1 0 0 1 2
06/28/2025 ATH Win, 4-3 1.0 0 0 0 0 1 Save
06/26/2025 @ PSC Win, 6-3 1.1 1 0 0 0 2
06/24/2025 @ PSC Win, 10-9 0.2 1 3 3 3 0
06/22/2025 @ PSC Win, 19-5 1.2 2 1 1 1 0
06/20/2025 BEV Win, 5-3 0.0 0 0 0 1 0
PERSONALITY
Leader Ability:Very High
Loyalty:High
Desire f. Win:Very Low
Greed:Very Low
Intelligence:Normal
Work Ethic:Very Low
Birthday:09/19/2002
Born in:San Diego, CA
Nationality:American
Height:6' 2"
Weight:195 lbs
Local Popularity:Unknown
National Pop.:Unknown
STATUS
Contract:None, Free Agent
Salary:-
Signed Through:-
Major Service:None, None
Service This Yr:None
40-Man Service:None, None
Pro Service:1 Year
Arbitration Eligibility:Not yet eligible
Option Years:3 option years left
Contract Extension: -
Drafted:-
APPALACHIAN LEAGUE 2025 PITCHING STATS
Pitching G GS W L SV ERA IP HA R ER HR BB K CG CG% SHO QS QS%
Overall 37 0 3 4 5 7.76 53.1 65 46 46 5 48 47 0 0.0 0 0 0.0
Pitching SVO BS SV% RA GF R/9 H/9 K/9 BB/9 FIP WHIP FIP- WAR BABIP        
Overall 14 6 45.5 37 21 19.41 10.97 7.93 8.10 6.29 2.12 122 -0.5 .364        
Pitching AB H 2B 3B HR R BB K SF SH HP AVG OBP SLG OPS      
vs. LHB 74 16 3 0 2 19 20 17 1 0 2 .216 .392 .338 .730      
vs. RHB 141 49 10 1 3 27 28 30 1 2 0 .348 .453 .496 .949      
APPALACHIAN LEAGUE 2025 PITCHING SPLITS
Split G GS W L SV ERA IP HA R ER HR BB K  
April 8 0 1 0 0 8.53 12.2 17 12 12 1 13 9  
May 12 0 2 3 2 9.90 20.0 28 22 22 3 18 15  
June 13 0 0 0 2 2.76 16.1 14 5 5 1 10 16  
July 4 0 0 1 1 14.54 4.1 6 7 7 0 7 7  
Last Year 51 0 5 5 6 6.78 82.1 100 64 62 9 63 72  
Career 88 0 8 9 11 7.16 135.2 165 110 108 14 111 119  
Home 20 0 1 2 5 7.27 26.0 30 21 21 3 20 25  
Road 17 0 2 2 0 8.23 27.1 35 25 25 2 28 22  
Grass 28 0 2 4 5 7.85 39.0 49 34 34 4 37 37  
Turf 9 0 1 0 0 7.53 14.1 16 12 12 1 11 10  
Day 7 0 0 0 3 2.53 10.2 8 3 3 1 4 10  
Night 30 0 3 4 2 9.07 42.2 57 43 43 4 44 37  
As Reliever / Substitution 37 0 3 4 5 7.76 53.1 65 46 46 5 48 47  
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+
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+
2022 UCLA - COL 19 15 3 2 3 1 5.40 31.2 35 21 19 2 23 30 0 0 1.83 .344 4.55 0.5 93
2023 UCLA - COL 20 14 8 2 4 2 6.29 44.1 55 36 31 11 27 31 0 0 1.85 .317 7.26 -0.4 81
2024 Detroit - A 21 51 0 5 5 6 6.78 82.1 100 64 62 9 63 72 0 0 1.98 .367 6.26 -1.0 71
2024 Penquannock - AA 21 6 6 0 5 0 11.75 28.1 46 40 37 2 24 11 0 0 2.47 .389 6.99 -0.2 43
2025 Detroit - A 22 37 0 3 4 5 7.76 53.1 65 46 46 5 48 47 0 0 2.12 .364 6.29 -0.5 66
Total ESL (28 & Under) 6 6 0 5 0 11.75 28.1 46 40 37 2 24 11 0 0 2.47 .389 6.99 43.2
Total APL (24 & Under) 88 0 8 9 11 7.16 135.2 165 110 108 14 111 119 0 0 2.03 .366 6.27 69.4
Total NCAA 29 11 4 7 3 5.92 76.0 90 57 50 13 50 61 0 0 1.84 .328 6.13 86.2
CAREER FIELDING STATS
Year/Team/League POS G GS PO A DP TC E PCT INN RNG ZR EFF PB RSTA RTO RTO%
2025 Detroit - A P 34 0 2 6 1 10 2 .800 53.1 1.35 -0.2 .943
TOTAL P 34 0 2 6 1 10 2 .800 53.1 1.35 -0.2 .943
PLAYER HISTORY
07/01/2021 Joined the UCLA Bruins.
01/01/2022 OSA scouting updated ratings (potential): Stuff: - (9); Movement: - (7); Control: - (12).
01/01/2023 OSA scouting updated ratings (potential): Stuff: - (8); Movement: - (7); Control: - (9).
07/01/2023 Went undrafted and became a free agent.
01/01/2024 OSA scouting updated ratings (potential): Stuff: - (8); Movement: - (7); Control: - (9).
02/17/2024 Signed a minor league contract with the Kalamazoo Royale with Cheese organization.
01/01/2025 OSA scouting updated ratings (potential): Stuff: - (8); Movement: - (6); Control: - (9).
07/12/2025 Released by the Kalamazoo organization.
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