Robert Gasser

Robert Gasser

26-Year-Old PitcherSP
Milwaukee Brewers
2026 Fantasy Outlook
Gasser underwent Tommy John surgery in June 2024 and returned to the big leagues in September 2025, positioning himself as a rotation option for 2026. The 26-year-old southpaw attacks hitters with two distinct low-90s fastballs, a sweeper, a changeup and a seldom-thrown cutter, getting by on depth of arsenal, guile and pitchability rather than loud stuff. His career swinging-strike rate is 10.6 percent, which is just below what southpaws Andrew Abbott and Matthew Boyd managed last year and a hair better than the likes of David Peterson and Yusei Kikuchi, so Gasser's Ks should tick up a bit over a larger sample. Brewers starters typically benefit from strong coaching and defense, so Gasser is in a good place to maximize his potential. Gasser probably won't be so good that you leave him in your mixed-league fantasy lineup every week, but he has a decent chance to be a high-end streamer in average or better matchups. He has thrown under 50 innings each of the last two seasons, so pushing up to around 120 innings would be considered a success in 2026. Read Past Outlooks
RANKS
From Preseason
#439
ADP
$Signed a one-year contract with the Brewers in March of 2025.
Goes 2.2 frames Thursday
PMilwaukee Brewers
March 6, 2026
Gasser allowed three earned runs over 2.2 innings in Thursday's spring game against the Rockies. He gave up three hits, struck out two batters and walked three.
Analysis
Gasser was not particularly sharp Thursday, but he did up his pitch count to 53 after tossing 11 pitches in his spring debut over a week ago. An elbow injury limited Gasser to just two regular-season appearances in 2025, but he finished the season healthy. He is in the mix with a host of other pitchers competing for spots in Milwaukee's starting rotation.
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Pitching Stats
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2025
2024
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2024 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
41
Last 10 Games
41
Last 5 Games
41
How many pitches does Robert Gasser 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 Robert Gasser 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
 
 
-33%
BAA vs LHP
2025
 
 
-100%
BAA vs LHP
2024
 
 
-6%
BAA vs LHP
2023
No Stats
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .185 29 6 2 5 0 0 2
Since 2023vs Right .275 114 15 3 28 2 0 1
2025vs Left .000 9 1 2 0 0 0 0
2025vs Right .313 20 4 2 5 1 0 1
2024vs Left .250 20 5 0 5 0 0 2
2024vs Right .267 94 11 1 23 1 0 0
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
 
 
-76%
ERA at Home
2025
 
 
-100%
ERA at Home
2024
 
 
-73%
ERA at Home
2023
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2023Home 1.46 1.01 24.2 2 1 0 6.9 1.1 0.7
Since 2023Away 6.00 1.44 9.0 0 1 0 2.0 2.0 1.0
2025Home 0.00 2.25 2.2 0 1 0 10.1 6.8 0.0
2025Away 6.00 1.00 3.0 0 1 0 6.0 6.0 3.0
2024Home 1.64 0.86 22.0 2 0 0 6.5 0.4 0.8
2024Away 6.00 1.67 6.0 0 0 0 0.0 0.0 0.0
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 Robert Gasser 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
1.25
 
K/9
7.9
 
BB/9
6.4
 
HR/9
1.6
 
Fastball
94.0 mph
 
ERA
3.18
 
WHIP
1.59
 
BABIP
.267
 
GB/FB
0.63
 
Left On Base
39.5%
 
Exit Velocity
86.5 mph
 
Barrels/BBE
10.7%
 
Spin Rate
2204 rpm
 
Balls Hit 95+ MPH
35.7%
 
Swinging Strike
9.8%
 
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 Robert Gasser See More
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Past Fantasy Outlooks
2025
2024
2023
Gasser is one of Milwaukee's top prospects and delivered a 2.57 ERA and 16:1 K:BB in his first five big-league starts in 2024, but he was lost for the season after undergoing Tommy John surgery in June. The left-hander is likely to spend most of the 2025 campaign rehabbing from the procedure, though he could make an impact late in the season. Realistically, Gasser won't be a major contributor for the Brewers or fantasy managers until 2026.
A 24-year-old lefty who safely projects to make it as at least a back-end starter, Gasser has thrown 161.2 innings at Triple-A and finished 2023 with a 3.09 ERA, 1.17 WHIP and 115 strikeouts over his final 93.1 innings. What Gasser lacks in quality offerings (zero plus pitches, 92-mph average fastball velocity) he makes up for in quantity -- he threw over 100 four-seamers, changeups, curveballs, cutters, sinkers, sliders and sweepers at Triple-A. His game is to keep hitters guessing while adeptly locating his pitches. What used to be a deep, talented Brewers rotation is now extremely top-heavy, so the back few spots should be cycled based on merit and health, and Gasser will surely get a look at some point, if not at the beginning of the season. He doesn't have the type of electric arsenal to be a bullpen weapon, so Gasser should stay stretched out all year.
We may never know for sure, but Gasser may have been the return piece Milwaukee most coveted from San Diego in the surprise Josh Hader deal at the deadline. Esteury Ruiz, the other top player the Brewers got back, has already been flipped in the three-team trade that sent William Contreras to Milwaukee. Gasser remains, and has a chance to follow in the impressive line of young starters to populate the Brewers' rotation. He had a 3.47 ERA, 1.37 WHIP and 57:24 K:BB in 46.2 innings across nine starts at Double-A and Triple-A after the trade - the 23-year-old's first starts above High-A. As things stand, Gasser would be the most exciting option whenever the Brewers need a sixth starter, and he is nearing big-league readiness. That said, the team generally breaks in their prized pitching prospects out of the bullpen before moving them to the rotation full time. Gasser looks more like a No. 4 starter based just on his low-90s fastball velocity and secondary offerings. However, his deceptive left-handed delivery and the ride he gets on his fastball allow the pitch to play up when he is locating it. Additionally, his slider and changeup play perfectly off his fastball, so it's easy to see how the Brewers could turn him into a No. 3 starter as long as he throws enough strikes.
More Fantasy News
Set for opener duties
PMilwaukee Brewers
September 26, 2025
Gasser is expected to serve as Milwaukee's opening pitcher for Saturday's game against the Reds, Adam McCalvy of MLB.com reports.
Analysis
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Yields two runs in season debut
PMilwaukee Brewers
September 21, 2025
Gasser (0-1) allowed two runs on one hit and two walks over three innings Sunday, striking out two and taking a loss against St. Louis.
Analysis
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Called up, will start Sunday
PMilwaukee Brewers
September 21, 2025
The Brewers recalled Gasser from Triple-A Nashville, and he'll start Sunday's game against the Cardinals, Adam McCalvy of MLB.com reports.
Analysis
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Activated, optioned to Triple-A
PMilwaukee Brewers
August 30, 2025
The Brewers reinstated Gasser (elbow) from the 60-day injured list Saturday and optioned him to Triple-A Nashville.
Analysis
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Completes eighth rehab start
PMilwaukee Brewers
Elbow
August 25, 2025
Gasser (elbow) struck out four batters and allowed two earned runs on three hits and two walks across 4.2 innings in a rehab start Sunday with Triple-A Nashville.
Analysis
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Latest Fantasy Rumors
Candidate to crack rotation
PMilwaukee Brewers
March 6, 2026
Gasser is in the mix to earn a rotation spot with the Brewers ahead of the 2026 regular season, according to Adam McCalvy of MLB.com.
Analysis
An elbow injury limited Gasser to just two regular-season appearances in 2025, but he's healthy in 2026, and that means he'll continue battling for a rotation role before the start of the 2026 season. He's in a battle for a rotation spot alongside names such as Brandon Sproat, Kyle Harrison and Logan Henderson.
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