TJ Rumfield

Active

Colorado Rockies · First Base

Age 266' 5" · 238 lbsBats Left

FBaseball Overview

Making his MLB debut at 26, Rumfield arrives in Colorado as a potential fantasy asset at first base with a solid combination of average and power. His rookie season line of .294 batting average with 12 home runs and 45 RBI across 293 at-bats demonstrates consistency at the plate, suggesting he can contribute meaningfully in batting average leagues. The Rockies' hitter-friendly environment at Coors Field offers intriguing upside for his home run and RBI production if he sees increased playing time, though his complete lack of stolen bases indicates he will not contribute in the speed category. Fantasy managers should view him as a high-average, moderate-power option with room for growth if his plate appearances increase, but his role as a rookie first baseman means he may experience periodic benching or platooning.

MLB Hitting

Year	Team	G	AVG	HR	RBI	R	SB	OBP	SLG	OPS
2026	Colorado Rockies	89	.297	12	47	42	0	.375	.486	.861
Career	Totals	89	.297	12	47	42	0	.375	.486	.861

Source: MLB Stats API · Multi-team seasons show combined totals — click to expand

Minor League Hitting

Year	Team	G	AVG	HR	RBI	R	SB	OBP	SLG	OPS
2021	Clearwater Threshers	27	.250	0	7	13	0	.426	.263	.689
2022	3 teams▼	57	.273	4	35	27	4	.366	.392	.758
2023	2 teams▼	86	.222	17	58	45	8	.320	.437	.757
2024	2 teams▼	122	.294	15	73	77	4	.370	.454	.824
2025	Scranton/Wilkes-Barre RailRiders	138	.285	16	87	85	5	.378	.447	.825
Career	Totals	430	.271	52	260	247	21	.365	.431	.796

Source: MLB Stats API · Multi-team seasons show combined totals — click to expand

Game Log2026 season

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Analytics2026 season · via Baseball Savant

Click for year to year changes

EV Avg84.2 mph

Max EV107.6 mph

Launch Angle15.2°

Barrel %5.6%

K %14.2%

Hard Hit %29.8%

Whiff %20.7%

Chase %30.8%

xBA0.251

xSLG0.386

xwOBA0.322

GB%39.6%

LD%27.2%

FB%28.4%

What These Stats Mean

EV Avg — Average exit velocity — how hard this batter hits the ball. Elite hitters (90+ mph) make consistently hard contact, driving better batting averages and more power.

Max EV — Peak exit velocity on the batter's hardest-hit ball this season. Signals raw power potential even without a high HR total yet.

Launch Angle — Average vertical angle of the ball off the bat. The sweet spot for extra-base hits is roughly 10–30°; extreme ground ball or pop-up hitters sit outside this range.

Barrel % — Percentage of batted balls hit with the optimal exit velocity + launch angle combo. Barrels are the single best predictor of home runs and slugging percentage.

K % — Strikeout rate per plate appearance. High K% suppresses batting average and limits run-scoring opportunities — lower is better for fantasy.

Hard Hit % — Percentage of batted balls hit 95 mph or harder. A broader power indicator than barrels; high hard-hit% players rack up extra-base hits and RBI.

Sprint Speed — Peak sprint speed in feet per second. The best predictor of stolen base upside and ability to leg out infield hits.

Whiff % — Percentage of swings that miss. High whiff rates signal strikeout vulnerability, dragging down batting average and overall production.

Chase % — How often the batter swings at pitches outside the strike zone. Low chase rates mean elite plate discipline — more walks, fewer strikeouts, more consistent at-bats.

xBA — Expected batting average based on contact quality, stripping out luck and defensive positioning. Better predictor of future performance than actual batting average.

xSLG — Expected slugging based on batted ball data. A high xSLG relative to actual SLG suggests power suppressed by bad luck that's likely to bounce back.

xwOBA — Expected weighted on-base average — the most comprehensive single expected metric. Combines contact quality, walks, and strikeouts to project overall offensive production.

GB% — Ground ball rate. High GB% hitters trade home run power for speed-dependent value — good for stolen base upside, but a drag on HR and SLG categories.

LD% — Line drive rate. High LD% hitters make consistent hard contact; line drives are the batted ball type most likely to fall for hits and boost batting average.

FB% — Fly ball rate. Elite power hitters combine high FB% with high exit velocity. High fly ball rate + soft contact = home run or nothing type.

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Year

Team

AVG

RBI

OBP

SLG

OPS

2026

Colorado Rockies

.297

.375

.486

.861

Career

Totals

.297

.375

.486

.861

Year

Team

AVG

RBI

OBP

SLG

OPS

2021

Clearwater Threshers

.250

.426

.263

.689

2022

3 teams▼

.273

.366

.392

.758

2023

2 teams▼

.222

.320

.437

.757

2024

2 teams▼

122

.294

.370

.454

.824

2025

Scranton/Wilkes-Barre RailRiders

138

.285

.378

.447

.825

Career

Totals

430

.271

260

247

.365

.431

.796