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  • Projections
    In-house Bayesian model · career prior + aging × stuff/discipline signals
  • Plate Discipline
    Decision+ · chase / passive cost · K% · BB%
  • Command & Stuff
    Pitching+ · Stuff+ · Command+ · meatball rate
  • Pitcher Stuff Lab
    In-zone whiff · xwOBAcon · tunnel · deception · count predictability
  • Stuff Model (diag)
    From-scratch XGBoost training runs, feature importance, pitcher grades
  • Expected Points
    Luck-neutral fantasy points · xSLG / xwOBA · ΔPts
  • Hitter Frontier
    Power × discipline tradeoff · Pareto-frontier hitters
  • Pitcher Frontier
    Process × contact-suppression · pound the zone vs limit damage
  • Hitter Vulnerabilities
    Biggest pitch-trait strengths & weaknesses · vs league or vs own
  • AAA Hitters
    Triple-A bats · xwOBA · contact quality · discipline · frontier
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Mark Vientos

Mark Vientos

1B / 3B·NYM
Compare
Compare
PA
463
H
99
HR
17
AVG
.233
xwOBA
.320
PPG
1.63
Career Seasons
YrGPAAVGOBPSLGISOxwOBAK%BB%K-BB%HRSBPtsPPGxPPG
202656202.214.249.370.156.31122.8%3.5%19.3%70791.41—
2025125463.233
2025 MLB Percentiles

Hitting Profile

463 PA — below qualified cutoff. Percentiles vs. qualified pool (faded).

Expected Results
xwOBA
28
.320
xBA
46
.253
.292
.413
.180
.320
24.8%
6.5%
18.3%
17
1
204
1.63
—
2024126455.266.324.514.248.33329.7%7.3%22.4%2702922.32—
202368233.211.255.367.156.30930.5%4.3%26.2%91650.96—
20221741.167.268.278.111.28329.3%12.2%17.1%10100.59—
xSLG
54
.447
Quality of Contact
Avg EV
77
91.4
Median EV
86
95.1
90th % EV
57
106.0
Barrel %
66
11.5
Hard-Hit %
87
50.5
Sweet-Spot %
33
35.1
Bat Speed
Avg
31
69.2
Median
36
70.9
90th %
30
75.4
Plate Discipline
Chase %
17
32.9
Whiff %
7
30.4
K %
26
24.8
BB %
26
6.5
Swing Decisions

Plate Discipline · Decision+

Expected-run-value of every swing-or-take decision, against a league-average batter’s optimum. 100 = avg · 110 = 1 SD better.

Decision+
92
≈ 20th pctl
Chase cost
-36.5r
361 swings @ bad pitch
Passive cost
-14.8r
238 takes @ hittable pitch
Swing rate
51.6%
1,811 pitches seen
Runs per 100
-2.83
lg avg -2.53
Count
View
2+17%6+25%163+25%815+50%8+20%15+18%22+31%29+71%24+50%10+22%9+29%17-7%40-28%46-21%56-17%46+61%18+60%10+26%23+0%59-45%65-30%63-14%50+57%234+53%15+26%27+22%40+26%35+41%27+38%133+31%13+0%11+27%15+25%8522CATCHER'S VIEW
Judgment — swing% vs optimal
−35%−15%0+15%+35%
  • Red cells — swings more than an optimal batter would here (chasing).
  • Blue cells — swings less than optimal (too passive).
  • Number in cell: swing%-delta vs optimal. Top-right: pitches seen.
Total pitches shown: 1,000