Robert Gsellman
Robert Gsellman
26-Year-Old PitcherRP
New York Mets
10-Day IL
Injury Triceps
Est. Return 2/1/2020
2019 Fantasy Outlook
Deeming Gsellman's conversion to the bullpen successful is a matter of perspective. Posting 16 holds and 13 saves wasn't bad, but he also blew six saves. Gsellman's surface stats and peripherals were suspect, especially for a reliever. As is usually the case when a former starter comes out of the bullpen, Gsellman added velocity, fueling the expected boost in strikeouts, albeit to a still-pedestrian 20.3%. Not only did he fail to improve his walk rate, it rose to 8.1%, a level too high for someone lacking better strikeout skills. Gsellman stuck with his four-pitch mix instead of paring down and focusing on just a couple, headed by a 95-mph four-seamer. Sometimes it takes a converted starter a couple years to figure things out as a reliever. Maybe this is the case with Gsellman. Unfortunately for his 2019 fantasy utility, Gsellman no longer has a real shot at saves after the Mets acquired Edwin Diaz from Seattle. Read Past Outlooks
RANKSFrom Preseason
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$Signed a contract with the Mets in 2011.
Done for season
PNew York Mets
August 20, 2019
Gsellman is likely done for the year after being diagnosed with a partially torn right triceps, Matt Ehalt of Yahoo Sports reports.
He was originally diagnosed with right triceps tightness, but it turns out the issue was more severe than that. Gsellman should be able to be ready for spring training, assuming he avoids surgery.
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Pitching Stats
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Left/Right Pitching Splits
Since 2017
BAA Batters K BB H 2B 3B HR
Since 2017vs Left .259 530 97 55 120 30 2 17
Since 2017vs Right .273 641 115 38 158 33 4 15
2019vs Left .283 106 24 12 26 9 0 2
2019vs Right .248 171 36 11 38 9 1 5
2018vs Left .216 164 34 19 30 9 0 6
2018vs Right .279 181 36 9 46 5 1 2
2017vs Left .276 260 39 24 64 12 2 9
2017vs Right .284 289 43 18 74 19 2 8
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Home/Away Pitching Splits
Since 2017
ERA on Road
ERA on Road
ERA on Road
ERA at Home
Since 2017Home 5.16 1.40 144.2 8 6 6 7.8 2.7 0.9
Since 2017Away 4.32 1.42 118.2 8 7 8 6.6 3.7 1.3
2019Home 8.51 1.77 24.1 1 2 0 8.5 3.0 0.4
2019Away 2.29 1.12 39.1 1 1 1 8.5 3.4 1.4
2018Home 4.47 1.20 44.1 2 1 6 9.5 2.8 0.8
2018Away 4.04 1.43 35.2 4 2 7 5.8 3.5 1.0
2017Home 4.50 1.39 76.0 5 3 0 6.5 2.6 1.2
2017Away 6.39 1.69 43.2 3 4 0 5.6 4.1 1.4
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Stat Review
How does Robert Gsellman compare to other relievers?
This section compares his stats with all relief pitcher seasons from the previous three seasons (minimum 30 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 this season's data (min 20 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.
    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.
95.4 mph
Left On Base
Exit Velocity
85.9 mph
Spin Rate
2226 rpm
Balls Hit 95+ MPH
Swinging Strike
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 Gsellman
Collette Calls: Better Days Ahead for These Pitchers?
71 days ago
Jason Collette analyzes wOBA vs. xwOBA to find pitchers who might present buy-low opportunities. Is Noah Syndergaard headed for a turn-around?
The Z Files: Oh, What a Relief It... Isn't?
112 days ago
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164 days ago
David Regan breaks down his methods for building a winning staff in his article for the 2019 RotoWire Fantasy Baseball Guide.
Mound Musings: NL East Draft Day Targets
190 days ago
Mound Musings is back with Brad Johnson offering an in-depth look at the pitching staff of each division, starting with the NL East where the Braves have Kevin Gausman and a deep pool of young arms.
Collette Calls: NL East Bold Predictions
209 days ago
Jason Collette takes a stab at the 2019 season. Will Zack Wheeler contend for the NL Cy Young? The answer to that and more here.
Past Fantasy Outlooks
A popular sleeper candidate heading into last season, Gsellman flopped in a major way, but it's too early to write the 24-year-old off. His strikeout rate fell by more than two per nine from his stellar debut sample in 2016, as he was far too hittable even when he put the ball out of the strike zone (76.0 percent O-Contact%). Although he maintained an above-average groundball rate, Gsellman gave something back in that department, with more balls being elevated and put over the fences. The velocity at which he throws his slider is a bit troubling given the torque on the arm, and he did lose some fastball velocity year-over-year, but as long as Gsellman is healthy, he should be in the mix for starts in New York. Gsellman deserves some consideration as an endgame flier in deep formats, but don't be stubborn and hold onto him if he gets off to a similarly poor start.
Gsellman began 2016 at Double-A Binghamton where a 2.71 ERA and 1.09 WHIP in 11 starts earned a promotion to Triple-A Las Vegas. The young righty was sporting a 5.73 ERA and 1.49 WHIP when he was summoned by the Mets on Aug. 23, but much of those struggles can be explained away by the harsh pitching conditions of the PCL. After an impressive appearance out of the bullpen the day of his callup, Gsellman was inserted into the rotation, posting a tidy 2.42 ERA and 1.28 WHIP, starting seven games. Even more impressive was a 22.7 percent strikeout rate, surpassing anything he'd done on the farm. This is not the first time an unsung Mets pitching prospect has shown up in the majors with added fastball velocity (93.6 mph) and a plus-plus slider (think Jacob deGrom). Given the injury concerns surrounding the Mets' rotation, Gsellman could find his way to close to a full season's workload, and the draft day price tag offers room to profit.
More Fantasy News
Hits IL with triceps injury
PNew York Mets
August 17, 2019
Gsellman was placed on the 10-day injured list with right triceps tightness, Tim Healey of Newsday reports.
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Dealing with triceps soreness
PNew York Mets
August 16, 2019
Gsellman hasn't pitched the last two days due to triceps soreness, Deesha Thosar of the New York Daily News reports.
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Nabs wins in extras
PNew York Mets
July 31, 2019
Gsellman (2-2) picked up the win Tuesday, striking out two over two perfect frames in an extra-innings victory over the White Sox.
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Serves up walkoff homer
PNew York Mets
July 22, 2019
Gsellman (0-2) took the loss against the Giants on Sunday, tossing 1.1 innings and giving up a walkoff solo home run to Mike Yastrzemski in the 12th.
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Rough stretch continues
PNew York Mets
July 17, 2019
Gsellman walked two batters but didn't allow a run in two-thirds of an inning during Tuesday's win over the Twins.
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