Reference layer
Current snapshot
| Age | 30 |
| Height | 6' 0" |
| Weight | 200 lb |
| Debut | 2020-08-13 |
Player profile / Atlanta Braves
Jorge Mateo
SS profile with live context, projection links, and Mithrandir card history when available.
Club Atlanta Braves
Position SS
Roster Active
Status Healthy / active roster
Rolling projection
Preseason / current pace / Bayesian update
Rolling bands shrink current-season signal toward the preseason prior until the sample earns more weight.
| xwOBA preseason | 0.287 |
| xwOBA current pace | 0.371 |
| xwOBA rolling p50 | 0.314 |
| Observed weight | 31% |
xwOBA
0.262
0.286
0.314
0.341
0.365
wOBA
0.426
0.456
0.489
0.523
0.553
ISO
0.117
0.142
0.169
0.196
0.220
K%
20.4%
22.7%
25.3%
27.8%
30.1%
Live percentile strip
Current traits vs projection tick
100th = best in MLB.
Hitting · percentile strip
BB%6.9%
28
Barrel%7.9%
82
+54 vs proj
Bat speed70.9
70
Exit velocity88.8
53
Hard-hit%46.4%
77
+42 vs proj
K%24.8%
35
xBA0.427
100
xSLG0.732
94
xwOBA0.371
89
+58 vs proj
Defense · percentile strip
Arm Strength94.1 · SS
93
Outs Above Avg2.0 · SS
81
Range Runs0.8 · SS
Limited
Baserunning · percentile strip
Base Running Runs0.5 · SS
59
Bolts15.0 · SS
84
SB Success Rate87.5% · SS
74
Sprint Speed30.1 · SS
99
Mithrandir+
Stuff+ and arsenal context
Stuff+ appears when the current pitch-event scoring artifact includes this pitcher; missing coverage is shown explicitly.
Avoids Bad ChasesST 59.3% · rebadged research
21
Avoids Bad TakesHPT 22.0% · rebadged research
77
Correct Decisions65.1% · rebadged research
38
Mithrandir Stuff+74
3
Resists Breaking - horizontalwOBA 0.281 · borderline
61
Resists Breaking - verticalwOBA 0.270 · insufficient sample
76
Resists ChangeupwOBA 0.261 · validated thin sample
87
Resists Cutters + splitterswOBA 0.327 · insufficient sample
67
Resists FastballwOBA 0.388 · validated
2
Resists SinkerwOBA 0.367 · validated
25
SEAGER+ Plate Discipline98
36
Rolling form chart
xwOBA snapshot line
Live snapshot series; true 50/100 PA windows require PA-level logs
Optimization map
Arsenal optimization map
Pitch-shape context from this pitcher’s current arsenal snapshot. Hover a pitch to inspect usage, movement, and bat-missing context.
2Pitches
2025Season
63%Top usage
ride
armside
gloveside
+Arsenal gap
+Shape contrast
Zone profile
Aggregate zone heatmap
Aggregate zone metrics from seasonal Statcast leaderboards.
Pitch arsenal
Usage mix, movement map, and Stuff+ composition
2025 pitch-level arsenal aggregates; current season takes over after 100 tracked pitches across at least 2 pitch types. Descriptive pitch-type Stuff+ composition. Not a promoted predictive metric.
| Pitch | Usage | Pitches | Stuff+ | Status |
|---|---|---|---|---|
| FB | 100.0% | 9 | 87 | limited sample |
Method note
Renamed from the attempted Kirby Index after audit; true Kirby requires release-angle trajectory data.
Live layer
Delta / regression
| xwOBA Δ | +0.081 |
| wOBA Δ | +0.199 |
negative regression
Mithrandir coverage
Module shelf
| Module | Cards | Latest | Signal |
|---|---|---|---|
| No Mithrandir card history is available for this player yet. | |||
Projection links / recent games
Available detail
| Hitter Projections 20260.290 xwOBA | 6 HR | Projection |
| 2026-05-20 @ MIA0 HR | 0 RBI / 0 Ch | 0 E | 0-0 |
| 2026-04-20 @ WSH0 HR | 0 RBI / 6 Ch | 0 E | 0-3 | BB, K, R |
| 2026-04-14 vs MIA0 HR | 0 RBI / 0 Ch | 0 E | 0-0 |
| 2026-04-13 vs MIA0 HR | 0 RBI / 3 Ch | 0 E | 0-1 | K |
| 2026-04-12 vs CLE0 HR | 1 RBI / 3 Ch | 0 E | 4-4 | RBI, 2 R |