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 | 547 | 56 | 137 | 14 | 0 | .290 | .384 | .443 | .827 |
| 1 Seasons | 547 | 56 | 137 | 14 | 0 | .290 | .384 | .443 | .827 |
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.
31
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 | 0.328 |
| xwOBA rolling p50 | 0.310 |
| Observed weight | 72% |
xwOBA
0.281
0.295
0.310
0.326
0.340
wOBA
0.358
0.370
0.384
0.397
0.410
ISO
0.100
0.115
0.130
0.146
0.160
K%
13.0%
14.9%
16.9%
19.0%
20.9%
Live percentile strip
Current traits vs projection tick
100th = best in MLB.
Hitting · percentile strip
Barrel%3.2%
25
Exit velocity84.2
13
Hard-hit%28.4%
13
-29 vs proj
xBA0.304
33
xSLG0.446
29
xwOBA0.328
75
BB%11.1%
80
+27 vs proj
Bat speed66.5
16
K%13.4%
94
+70 vs proj
Defense · percentile strip
Arm Runs-0.1 · 1B
24
Outs Above Avg5.0 · 1B
90
Range Runs5.0 · 1B
88
Baserunning · percentile strip
Base Running Runs-5.3 · 1B
1
Sprint Speed24.9 · 1B
4
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 64.8% · rebadged research
48
Avoids Bad TakesHPT 18.3% · rebadged research
94
Correct Decisions68.1% · rebadged research
72
Resists FastballwOBA 0.382 · validated
5
SEAGER+ Plate Discipline107
79
Resists Breaking - horizontalwOBA 0.304 · borderline
23
Resists Breaking - verticalwOBA 0.290 · insufficient sample
18
Resists ChangeupwOBA 0.274 · validated thin sample
64
Resists Cutters + splitterswOBA 0.346 · insufficient sample
17
Resists SinkerwOBA 0.352 · validated
61
Rolling form chart
xwOBA snapshot line
Live snapshot series; true 50/100 PA windows require PA-level logs
Spray profile
Field-coordinate spray profile
265 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 | +0.008 |
| wOBA Δ | +0.064 |
negative regression
Regression watch
Running hot. Expect some cooling.
Rumfield’s wOBA sits at 0.384, but the quality of contact underneath says it should be 0.328 — a gap of 0.056, -2.2 standard deviations from the MLB norm over 567 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 |
|---|---|---|---|
| Smith, Dominic ATL · L | 0.73 | Ground-ball rateChase rate | Player · Projection |
| Horwitz, Spencer PIT · L | 0.65 | In-zone contactGround-ball rate | Player · Projection |
| Hicks, Liam MIA · L | 0.63 | Hard-hit rateBarrel rate | Player · Projection |
| Loftin, Nick KC · R | 0.63 | Pull rateHard-hit 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 | 4 | 2026-09-01 | Impact contact carried uneven swing decisions |
| Fielding | 16 | 2026-09-01 | 3 chances | 0 difficult plays | Run Exp -0.172 |
Projection links / recent games
Available detail
| Hitter Projections 20260.320 xwOBA | 6 HR | Projection |
| 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 |