Kumar Rocker

Kumar Rocker

25-Year-Old PitcherSP
Texas Rangers
2025 Fantasy Outlook
Few pitchers in recent memory returned from Tommy John surgery with such immediate and obvious success as Rocker at the end of 2024. He has significant pedigree and was a famous pitcher at Vanderbilt from 2019 through 2021, but Rocker wasn't on any top-100 prospect lists last season prior to returning to action. Rocker had Tommy John surgery in mid-May of 2023 and began his rehab assignment the first week of July 2024. That's a speedy recovery for a young, prized pitcher like Rocker, and after three short outings in the Arizona Complex League, the 6-foot-5 righty logged a 0.91 ERA, 0.57 WHIP and 47:4 K:BB in 29.2 innings over his next seven minor-league starts at Double-A and Triple-A. That level of dominance -- and the frontline-caliber stuff he was showing -- was not expected, but he quickly became the talk of the minors, culminating in a 10-K, one-hit, five-inning start for Triple-A Round Rock in late-August. Rocker made three big-league starts to close the year, with Texas signaling that he will be part of the rotation in 2025. His mid-90s fastball is a good pitch, but it's his mid-80s curveball (often mistakenly classified as a slider) that dominates hitters, particularly righties. If Rocker can add a quality cutter or changeup to his arsenal, that could allow him to be one of the better starters in the game, but as things stand, he should still rack up strikeouts on a per-start basis. He only logged 48.1 innings in 2024, so look for him to fall short of 150 innings this year. Read Past Outlooks
RANKS
Rest of Season From Preseason
#294
ADP
Signed a one-year contract with the Rangers in March of 2025.
Logs quality start in no-decision
PTexas Rangers
June 28, 2025
Rocker did not factor into the decision in Saturday's 3-2 extra-inning win over the Mariners, allowing two runs on four hits and one walk with six strikeouts over six innings.
Analysis
Rocker threw 67 of 97 pitches for strikes and induced 10 whiffs, falling a two-out single in the sixth inning short of potentially earning his third straight win. The 25-year-old notched his first quality start since April 17 and has now allowed just four earned runs over his past three outings. He'll carry a 6.13 ERA, 1.54 WHIP and 37:12 K:BB across 39.2 innings into a road matchup with the Padres next weekend.
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Pitching Stats
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2025 MLB Game Log
2025
2024
2025 MLB Game Log
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Scoring
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2024 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
77
Last 10 Games
77
Last 5 Games
79
How many pitches does Kumar Rocker generally throw?
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
 
1-10
 
11-20
 
21-30
 
31-40
 
41-50
 
51-60
 
61-70
 
71-80
 
81-90
 
91-100
 
101-110
 
111-120
 
121+
What part of the game does Kumar Rocker generally pitch?
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
 
 
 
1st
 
 
 
2nd
 
 
 
3rd
 
 
 
4th
 
 
 
5th
 
 
 
6th
 
 
 
7th
 
 
 
8th
 
 
 
9th
 
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2023
 
 
-17%
BAA vs RHP
2025
 
 
-33%
BAA vs RHP
2024
 
 
-48%
BAA vs LHP
2023
No Stats
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .321 128 26 14 35 6 0 4
Since 2023vs Right .265 108 25 4 26 2 1 2
2025vs Left .356 100 18 9 31 6 0 4
2025vs Right .240 81 19 3 18 2 1 1
2024vs Left .182 28 8 5 4 0 0 0
2024vs Right .348 27 6 1 8 0 0 1
2023vs Left 0 0 0 0 0 0 0 0
2023vs Right 0 0 0 0 0 0 0 0
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2023
 
 
-73%
ERA at Home
2025
 
 
-79%
ERA at Home
2024
 
 
-28%
ERA at Home
2023
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2023Home 2.42 1.04 26.0 2 1 0 9.0 2.1 0.3
Since 2023Away 8.88 2.05 25.1 1 5 0 8.9 4.3 1.8
2025Home 2.35 0.91 23.0 2 0 0 8.2 0.8 0.4
2025Away 11.34 2.40 16.2 1 4 0 8.6 5.4 2.2
2024Home 3.00 2.00 3.0 0 1 0 15.0 12.0 0.0
2024Away 4.15 1.38 8.2 0 1 0 9.3 2.1 1.0
2023Home 0 0 0 0 0 0 0 0 0
2023Away 0 0 0 0 0 0 0 0 0
More Splits View More Split Stats
Stat Review
How does Kumar Rocker compare to other starting pitchers?
This section compares his stats with all starting pitcher seasons from the previous three seasons (minimum 120 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.

* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 120 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
  • K/BB
    Strikeout to walk ratio.
  • K/9
    Average strikeouts per nine innings.
  • BB/9
    Average walks per nine innings.
  • HR/9
    Average home runs allowed per nine innings.
  • Fastball
    Average fastball velocity.
  • ERA
    Earned run average. The average earned runs allowed per nine innings.
  • WHIP
    Walks plus hits per inning pitched.
  • BABIP
    Batting average on balls in play. Measures how many balls in play against a pitcher go for hits.
  • GB/FB
    Groundball to flyball ratio. The higher the number, the more likely a pitcher is to induce groundballs.
  • Left On Base
    The percentage of base runners that a pitcher strands on base over the course of a season.
  • Exit Velocity
    The speed of the baseball as it comes off the bat, immediately after a batter makes contact.
  • Barrels/BBE
    The percentage of batted ball events resulting in a Barrel. A Barrel is a batted ball with similar exit velocity and launch angle to past ones that led to a minimum .500 batting average and 1.500 slugging percentage.
  • Spin Rate
    Spin Rate is the rate of spin on a baseball after it is released. It is measured in revolutions per minute (rpm).
  • Balls Hit 95+ MPH
    The percentage of batted balls hit that met or exceeded the 95 MPH threshold.
  • Swinging Strike
    The percentage of pitches that result in a swing and a miss.
K/BB
3.08
 
K/9
8.4
 
BB/9
2.7
 
HR/9
1.1
 
Fastball
95.8 mph
 
ERA
6.13
 
WHIP
1.54
 
BABIP
.370
 
GB/FB
2.03
 
Left On Base
61.1%
 
Exit Velocity
86.3 mph
 
Barrels/BBE
6.5%
 
Spin Rate
2165 rpm
 
Balls Hit 95+ MPH
32.0%
 
Swinging Strike
11.5%
 
Prospect Rankings History
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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Recent RotoWire Articles Featuring Kumar Rocker See More
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2023 Fantasy Outlook
Unfortunately, Rocker's fame and draft pedigree (selected third overall by Texas) greatly outstrip his current dynasty value. Rocker famously didn't sign in 2021 after the Mets selected him with the No. 10 overall pick and he subsequently failed his physical. He had arthroscopic shoulder surgery last September and returned to the mound in the summer of 2022 for the Tri-City ValleyCats of the Frontier League. Rocker's signature upper-90s fastball and 70-grade slider were intact when scouts went to see him, which was enough for him to get a big payday. However, he went to the Arizona Fall League after signing and looked like a future reliever. He walked 12 in 14 innings over six appearances and essentially only trusted his slider. It's possible that Rocker was just disinterested and will look like a different pitcher this spring, but the Rangers shocking everyone by taking him with the third pick shouldn't be used as an appeal to authority with regard to his current dynasty value.
More Fantasy News
Limits Pirates to two runs in win
PTexas Rangers
June 21, 2025
Rocker (3-4) earned the win against Pittsburgh on Saturday, allowing two runs on five hits and three walks while striking out four across 5.1 innings.
Analysis
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Getting another start Saturday
PTexas Rangers
June 21, 2025
Rocker is slated to start Saturday's game against the Pirates at PNC Park.
Analysis
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Start cut short by cramping
PTexas Rangers
June 15, 2025
Rocker (2-4) picked up the win Sunday against the White Sox, allowing four hits and one walk with six strikeouts over five innings.
Analysis
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Promoted for Sunday's start
PTexas Rangers
June 15, 2025
The Rangers recalled Rocker from Triple-A Round Rock in advance of his start Sunday against the White Sox.
Analysis
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Set for Sunday's start
PTexas Rangers
June 14, 2025
Rocker will be recalled from Triple-A Round Rock to start Sunday against the White Sox, Evan Grant of The Dallas Morning News reports.
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Latest Fantasy Rumors
Rangers shoot down closing report
PTexas Rangers
May 26, 2025
Rangers' president of baseball operations Chris Young said Monday that the Rangers are not considering Rocker in the closer role when he returns from the injured list due to a shoulder injury , Evan Grant of The Dallas Morning News reports.
Analysis
An earlier report indicated Rocker was in legitimate consideration to be the Rangers' closer once healthy, but the team intends to deploy Rocker as a starter in the short and long term. Per Grant, Texas could use him out of the bullpen for a short stint if necessary but have not considered him for ninth-inning work. The Rangers' bullpen has struggled in 2025 and they've yet to find a long-term answer at closer, and it appears that Rocker will not be a potential solution.
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