Kumar Rocker

Active

Texas Rangers · SP

Age 266' 5" · 245 lbsThrows Right

#488 Current

FBaseball Overview

Rocker enters 2026 with mixed results through his first two MLB seasons, showing modest improvement in his ERA and WHIP while struggling to post winning records. The 26-year-old right-hander remains a back-end rotation option for the Rangers, offering modest strikeout upside at 70 K across 80 innings in 2026, though his ERA hovers near 3.83 and his WHIP stays elevated at 1.34. Fantasy managers should view him as a streaming or deeper-league rotation fill rather than a reliable anchor, as his win-loss record (2-6) reflects inconsistent run support and execution. The key to Rocker's fantasy value hinges on whether he can sustain the ERA improvements shown in 2026 and reduce his walk rate, as any gains in strikeout volume could make him a viable spot starter in deeper formats.

News Updates

Kumar Rocker Limited Again in No-Decision
Texas Rangers pitcher Kumar Rocker was limited to 4.1 innings in Friday's game against Toronto, allowing one run on three hits and two walks with two strikeouts in a no-decision. Rocker's limited workload continues to be a concern for fantasy purposes as the Rangers manage his workload late in the season.
Sep 19, 2026
Kumar Rocker dominates against White Sox
Texas Rangers pitcher Kumar Rocker earned the win on Tuesday against the White Sox, allowing just one hit across six innings with two walks and six strikeouts. Rocker's dominant performance showcases his potential as a top-tier starting pitcher for fantasy purposes. The excellent control and limited hits suggest Rocker is finding his groove mid-season.
Jul 22, 2026
Kumar Rocker charged with seven runs in Rangers loss
Texas Rangers pitcher Kumar Rocker took the loss on Saturday against Houston, allowing seven runs as the Rangers fell to the Astros 9-3. The rough outing continued his struggles this season with a 2-8 record.
Jul 12, 2026

MLB Pitching

Year	Team	G	GS	W	L	ERA	WHIP	K	IP	BB
2024	Texas Rangers	3	3	0	2	3.86	1.54	14	11.2	6
2025	Texas Rangers	14	14	4	5	5.74	1.46	56	64.1	23
2026	Texas Rangers	30	27	6	11	4.38	1.41	138	148.0	61
Career	Totals	47	44	10	18	4.74	1.43	208	224	90

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

Minor League Pitching

Year	Team	G	GS	W	L	ERA	WHIP	K	IP	BB
2023	Hickory Crawdads	6	6	2	2	3.86	1.00	42	28.0	7
2024	2 teams▼	5	5	0	0	0.46	0.61	29	19.2	3
2025	2 teams▼	5	5	1	0	3.32	1.00	18	19	3
Career	Totals	16	15	3	3	3.66	1.00	86	64	12

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

Last Week / Last Month

Current season · MLB only

7 games

G	GS	IP	W-L	SV	ERA	WHIP	K	BB
7	6	32.0	2-2	0	3.94	1.44	32	14

30 games

G	GS	IP	W-L	SV	ERA	WHIP	K	BB
30	27	148.0	6-11	0	4.38	1.41	138	61

Game Log2026 MLB

Loading game log…

Advanced Stats2026 season · via Baseball Savant

Click for year to year changes

FB Velo94.4 mph

Avg Spin2142 rpm

Whiff %26.1%

K %21.4%

BB %9.5%

Hard Hit %40.1%

Barrel %7.5%

xERA4.48

xBA Against0.251

xSLG Against0.412

BA Against0.255

SLG Against0.425

GB%42.8%

FB%24.0%

What These Stats Mean

FB Velo — Average fastball velocity. Harder throwers generate more swings and misses, setting up every other pitch in their arsenal. Velocity is the foundation of strikeout upside.

Avg Spin — Average spin rate across all pitches. Higher spin creates more movement and makes pitches harder to square up — elite spinners run better strikeout and batting average against numbers.

Whiff % — Swings-and-misses per swing. The most direct measure of a pitcher's ability to miss bats and the best leading indicator of strikeout rate.

K % — Strikeout rate per batter faced. The core fantasy pitching stat — high K% means reliable strikeout totals that hold up even in shorter starts.

BB % — Walk rate per batter faced. The primary control metric. High BB% tanks ERA and WHIP and keeps baserunners on constantly. Elite starters typically run below 7%.

Hard Hit % — Percentage of batted balls hit 95 mph or harder against. Low hard-hit% means weak contact, protecting both ERA and the defense behind the pitcher.

Barrel % — Percentage of batted balls barreled against. The most direct home run predictor — low barrel% pitchers rarely give up long balls.

xERA — Expected ERA based on contact quality allowed, removing the effect of sequencing, luck, and defense. Better predictor of future ERA than ERA itself.

xBA Against — Expected batting average opponents should hit based on contact quality. A gap between xBA and actual BA indicates unsustainable luck in either direction.

xSLG Against — Expected slugging allowed based on contact quality. High xSLG against predicts future extra-base damage; low xSLG means the pitcher is genuinely suppressing power.

BA Against — Actual batting average opponents are hitting — a key WHIP component. Check xBA to see if the number is sustainable.

SLG Against — Actual slugging allowed. Captures hits, doubles, triples, and home runs — lower means the pitcher is limiting the power damage he gives up.

GB% — Ground ball rate. High GB% pitchers generate double plays, limit home runs, and keep the ball in the park — great for protecting ERA and WHIP ratios.

FB% — Fly ball rate. High FB% pitchers give up more air contact — dangerous when combined with high exit velocity, less so when contact is soft.

Loading player data...

Year

Team

ERA

WHIP

2024

Texas Rangers

3.86

1.54

11.2

2025

Texas Rangers

5.74

1.46

64.1

2026

Texas Rangers

4.38

1.41

138

148.0

Career

Totals

4.74

1.43

208

224

Year

Team

ERA

WHIP

2023

Hickory Crawdads

3.86

1.00

28.0

2024

2 teams▼

0.46

0.61

19.2

2025

2 teams▼

3.32

1.00

Career

Totals

3.66

1.00

W-L

ERA

WHIP

32.0

2-2

3.94

1.44

W-L

ERA

WHIP

148.0

6-11

4.38

1.41

138