Reference layer
Current snapshot
| Age | 26 |
| Height | 6' 5" |
| Weight | 238 lb |
| Debut | 2026-03-27 |
Player profile / Colorado Rockies
Tj Rumfield
1B · Bats/Throws L/R · 6' 5", 238 lb · Age 26
Club Colorado Rockies
Position 1B
Roster Current MLB team
Status Healthy / active roster
Traditional line
Season by season
| PA | R | H | HR | SB | AVG | OBP | SLG | OPS | |
|---|---|---|---|---|---|---|---|---|---|
| 2026 | 631 | 67 | 164 | 16 | 0 | .300 | .390 | .453 | .843 |
| 1 Seasons | 631 | 67 | 164 | 16 | 0 | .300 | .390 | .453 | .843 |
At a glance
Season percentile report
The headline weighs outcome stats (xwOBA, barrels); each bar averages its full strip group below. 100 = best in MLB.
36
Offense
percentile
percentile
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 | 0.264 |
| xwOBA current pace | 0.333 |
| xwOBA rolling p50 | 0.316 |
| Observed weight | 75% |
xwOBA
0.288
0.301
0.316
0.330
0.343
wOBA
0.365
0.377
0.390
0.403
0.414
ISO
0.109
0.122
0.137
0.151
0.164
K%
12.9%
14.6%
16.5%
18.3%
20.0%
Live percentile strip
Current traits vs projection tick
100th = best in MLB.
Hitting · percentile strip
Barrel%3.7%
32
Exit velocity84.4
15
Hard-hit%28.4%
13
-30 vs proj
xBA0.310
38
xSLG0.458
35
xwOBA0.333
80
BB%11.0%
80
+27 vs proj
Bat speed66.4
15
K%13.2%
94
+72 vs proj
Defense · percentile strip
Arm Runs-0.1 · 1B
21
Outs Above Avg2.0 · 1B
81
Range Runs1.7 · 1B
73
Baserunning · percentile strip
Base Running Runs-5.9 · 1B
0
Sprint Speed24.9 · 1B
5
Mithrandir+
Plate skills: swing decisions and pitch-type resistance
Our research metrics for how this hitter controls the strike zone and handles each pitch family.
Avoids Bad ChasesST 65.8% · rebadged research
53
Avoids Bad TakesHPT 19.3% · rebadged research
92
Correct Decisions68.1% · rebadged research
71
Resists FastballwOBA 0.372 · validated
10
SEAGER+ Plate Discipline107
80
Resists Breaking - horizontalwOBA 0.340 · borderline
2
Resists Breaking - verticalwOBA 0.297 · insufficient sample
14
Resists ChangeupwOBA 0.281 · validated thin sample
46
Resists Cutters + splitterswOBA 0.342 · insufficient sample
17
Resists SinkerwOBA 0.348 · validated
70
Rolling form chart
xwOBA snapshot line
Live snapshot series; true 50/100 PA windows require PA-level logs
Spray profile
Field-coordinate spray profile
300 Statcast batted-ball coordinates from the pitch-event feed (2026). Direction profile remains as the v1 context layer when coordinate density is limited.
Zone profile
Aggregate zone heatmap
Aggregate zone metrics from seasonal Statcast leaderboards.
Bat tracking
Swing path, attack angle, bat speed
Aggregate Savant bat-tracking metrics; not per-swing motion capture. The full swing, with the recommended path overlaid, lives in the 3D Swing Simulator.
Live layer
Delta / regression
| xwOBA Δ | +0.013 |
| wOBA Δ | +0.070 |
negative regression
Regression watch
Running hot. Expect some cooling.
Rumfield’s wOBA sits at 0.390, but the quality of contact underneath says it should be 0.333 — a gap of 0.057, -2.3 standard deviations from the MLB norm over 657 PA. The results have outrun the underlying process; as the sample grows, expect the numbers to drift back toward the deserved level.
Comp Engine · 2026 profile shape
Closest profiles
| Player | Similarity | Agrees on | Open |
|---|---|---|---|
| Horwitz, Spencer PIT · L | 0.68 | Ground-ball rateSprint speed | Player · Projection |
| Loftin, Nick KC · R | 0.63 | Fly-ball rateGround-ball rate | Player · Projection |
| Hicks, Liam MIA · L | 0.63 | Bat speedAvg exit velocity | Player · Projection |
| Perdomo, Geraldo AZ · L | 0.58 | Max exit velocityStrikeout rate | Player · Projection |
Profile-shape similarity, not results: six weighted feature groups standardized within this season's qualified hitters.
Mithrandir coverage
Module shelf
| Module | Cards | Latest | Signal |
|---|---|---|---|
| Hitting | 5 | 2026-09-04 | Disciplined swing decisions drove the score |
| Fielding | 25 | 2026-09-24 | 2 chances | 0 difficult plays | Run Exp +0.222 |
Projection links / recent games
Available detail
| 2026-08-15 @ SF0 HR | 0 RBI / 6 Ch | 0 E | 0-4 | K |
| 2026-05-20 vs TEX0 HR | 1 RBI / 12 Ch | 0 E | 2-4 | RBI |
| 2026-04-20 vs LAD1 HR | 1 RBI / 9 Ch | 0 E | 1-4 | HR, RBI, R |
| 2026-04-17 vs LAD0 HR | 0 RBI / 7 Ch | 0 E | 0-4 | 2 K |
| 2026-04-15 @ HOU0 HR | 0 RBI / 0 Ch | 0 E | 0-4 | K |