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    In-house Bayesian model · career prior + aging × stuff/discipline signals
  • Plate Discipline
    Decision+ · chase / passive cost · K% · BB%
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    Pitching+ · Stuff+ · Command+ · meatball rate
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    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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Position cohort

Hitting value vs. 3B peers

Rank #22 of 61

Each bar is one 3B, ordered left-to-right by Value (blended). Center dot is VORP; whiskers span V⁻ → V⁺. This player is highlighted in blue.

-500+50+100+150TJ Rumfield
TJ Rumfield · #22
V⁻ -44VORP 5V⁺ 0
TJ Rumfield

TJ Rumfield

1B / 3B·COL
Compare
Compare
PA
268
H
65
HR
9
AVG
.278
xwOBA
.334
PPG
2.36
Career Seasons
YrGPAAVGOBPSLGISOxwOBAK%BB%K-BB%HRSBPtsPPGxPPG
Proj80347.258.327.399.141.32518.4%8.3%10.1%921742.17—
202667268.278
2026 MLB Percentiles

Hitting Profile

Expected Results
xwOBA
48
.334
xBA
52
.256
xSLG
.365
.453
.175
.334
14.9%
10.1%
4.8%
9
0
158
2.36
—
41
.406
Quality of Contact
Avg EV
4
85.0
Median EV
27
90.6
90th % EV
18
102.0
Barrel %
28
6.7
Hard-Hit %
16
34.9
Sweet-Spot %
79
39.5
Bat Speed
Avg
12
67.2
Median
19
69.3
90th %
24
74.5
Plate Discipline
Chase %
39
31.4
Whiff %
72
17.9
K %
83
14.9
BB %
59
10.1
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+
102
≈ 58th pctl
Chase cost
-5.5r
63 swings @ bad pitch
Passive cost
-2.6r
37 takes @ hittable pitch
Swing rate
51.5%
330 pitches seen
Runs per 100
-2.45
lg avg -2.53
Count
View
153243+75%8+0%10+20%15+0%10+17%634+43%23-25%28-15%13-27%15+11%94+27%11+20%15-42%19-19%26-9%11+71%73+25%8+60%10433132132CATCHER'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: 330