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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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Fernando Tatis Jr.

Fernando Tatis Jr.

2B / OF·SDP
Compare
Compare
PA
635
H
148
HR
25
AVG
.257
xwOBA
.364
PPG
2.63
Career Seasons
YrGPAAVGOBPSLGISOxwOBAK%BB%K-BB%HRSBPtsPPGxPPG
202665275.269.344.322.053.35021.5%9.5%12.0%1151101.69—
2025163692.267
2023 MLB Percentiles

Hitting Profile

Expected Results
xwOBA
79
.364
xBA
80
.275
xSLG
.368
.445
.178
.375
18.6%
12.9%
5.7%
25
35
450
2.76
—
2024110438.276.341.492.216.39121.9%7.3%14.6%21113072.79—
2023146635.257.323.449.192.36422.2%8.3%13.9%25293842.63—
2021138547.282.366.610.328.41228.0%11.3%16.7%42254383.17—
202067258.276.366.569.293.42323.6%10.5%13.1%17122343.49—
201990372.317.382.590.273.34829.6%8.1%21.5%22182592.88—
84
.512
Quality of Contact
Avg EV
83
91.7
Median EV
84
94.9
90th % EV
78
107.2
Barrel %
66
11.0
Hard-Hit %
84
49.3
Sweet-Spot %
22
33.3
Bat Speed
Avg
50
70.4
Median
66
72.6
90th %
65
77.5
Plate Discipline
Chase %
23
32.3
Whiff %
13
28.8
K %
37
22.2
BB %
39
8.3
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+
101
≈ 54th pctl
Chase cost
-47.8r
458 swings @ bad pitch
Passive cost
-10.5r
192 takes @ hittable pitch
Swing rate
54.1%
2,333 pitches seen
Runs per 100
-2.50
lg avg -2.54
Count
View
33+14%7+11%9+22%9234+25%12-4%23+15%34+9%23+32%195+45%20+0%42-36%44-9%53-14%36+12%41+29%14+44%25+15%61-22%60-16%67-12%40+37%19+45%11+13%23+43%44+16%32+19%36+35%203+0%7+25%8+44%16+33%12+14%7111CATCHER'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