Orion Kerkering

Orion Kerkering

24-Year-Old PitcherRP
Philadelphia Phillies
15-Day IL
Injury Hamstring
Est. Return 4/7/2026
2026 Fantasy Outlook
After a tremendous 2024 that kept Kerkering in the conversation as a potential closer of the future in Philadelphia, the hard-throwing righty wasn't able to replicate that level of success last season. Kerkering wasn't awful - he racked up eight wins, four saves and 19 holds across a career-high 69 appearances - but he struggled with his command while his strikeout and swinging strike rates regressed. Opposing hitters squared up a bit more on his sweeper, as his 23.6 percent whiff rate was 5th-worst for that pitch type. Kerkering is still young - he turns 25 in April - but his results last year likely played a small role in the Phillies' decision to acquire Jhoan Duran as their closer. With Philadelphia recently signing Brad Keller, Kerkering is likely to slot into the mid-to-upper end of the team's high-leverage hierarchy to open 2026. He still has the upside to play an important role for the Phillies, but he'll need to rebound across a few categories. Read Past Outlooks
RANKS
Rest of Season
From Preseason
#391
ADP
Signed a one-year contract with the Phillies in March of 2026.
Begins rehab assignment
PPhiladelphia Phillies
Hamstring
March 28, 2026
Kerkering (hamstring) threw a clean inning in Saturday's minor-league rehab appearance for Triple-A Lehigh Valley, striking out one.
Analysis
Kerkering, who's working his way back from a Grade 1 right hamstring strain, is next expected to pitch in consecutive games Sunday and Monday, per MLB.com. Once he's cleared to join Philadelphia's bullpen, Kerkering is likely to operate primarily as a setup man for closer Jhoan Duran in 2026.
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Pitching Stats
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2026 MLB Game Log
2026
2025
2024
2023
2026 MLB Game Log
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2025 MLB Game Log
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2024 MLB Game Log
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2023 MLB Game Log
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Left/Right Pitching Splits
Since 2024
 
 
-11%
BAA vs RHP
2026
No Stats
2025
 
 
-9%
BAA vs RHP
2024
 
 
-14%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2024vs Left .247 220 59 24 46 8 0 5
Since 2024vs Right .219 303 80 20 60 15 0 3
2026vs Left 0 0 0 0 0 0 0 0
2026vs Right 0 0 0 0 0 0 0 0
2025vs Left .253 108 25 13 23 4 0 3
2025vs Right .229 158 40 14 32 7 0 3
2024vs Left .242 112 34 11 23 4 0 2
2024vs Right .209 145 40 6 28 8 0 0
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Home/Away Pitching Splits
Since 2024
 
 
-26%
ERA at Home
2026
No Stats
2025
 
 
-6%
ERA at Home
2024
 
 
-50%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2024Home 2.36 1.18 61.0 9 3 1 10.0 2.7 0.7
Since 2024Away 3.19 1.26 62.0 4 4 3 10.3 3.8 0.4
2026Home 0 0 0 0 0 0 0 0 0
2026Away 0 0 0 0 0 0 0 0 0
2025Home 3.19 1.32 31.0 7 1 1 10.2 4.1 1.2
2025Away 3.41 1.41 29.0 1 3 3 9.3 4.0 0.6
2024Home 1.50 1.03 30.0 2 2 0 9.9 1.2 0.3
2024Away 3.00 1.12 33.0 3 1 0 11.2 3.5 0.3
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Stat Review
How does Orion Kerkering 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 2019 data (min 30 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
2.41
 
K/9
9.8
 
BB/9
4.1
 
HR/9
0.9
 
Fastball
97.4 mph
 
ERA
3.30
 
WHIP
1.37
 
BABIP
.320
 
GB/FB
1.29
 
Left On Base
73.4%
 
Exit Velocity
80.9 mph
 
Barrels/BBE
3.6%
 
Spin Rate
2626 rpm
 
Balls Hit 95+ MPH
20.6%
 
Swinging Strike
9.9%
 
Prospect Rankings History
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Defensive Stats
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Stats Vs Today's Lineup
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Recent RotoWire Articles Featuring Orion Kerkering See More
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Past Fantasy Outlooks
2025
2024
Kerkering's first full season in the majors was delayed by a few weeks due to what the Phillies called a "right forearm strain". In reality, the 23-year-old was simply rebuilding strength after missing extensive time during spring training due to a severe case of the flu. Kerkering was activated in mid-April and pitched on the lower-end of Philadelphia's high-leverage hierarchy, typically working the sixth or seventh innings. The rookie was outstanding, posting a 2.29 ERA (3.19 xERA) and 1.08 WHIP over 63 innings with a 23.2 K-BB percentage that ranked 20th among qualified relievers. Kerkering failed to record any saves in 2024, but remains in the conversation as a potential closer of the future in Philadelphia.
A fifth-round pick of the Phillies in 2022, Kerkering opened last season in the minors with the team's Single-A affiliate. He ended 2023 pitching high-leverage innings for Philadelphia in the NLCS, as the 22-year-old right-hander was simply too dominant for the minors. Kerkering posted a remarkable 1.51 ERA, 0.89 WHIP and 79:12 K:BB ratio over 53.2 innings while advancing through four levels. The South Florida alum boasts one of the most unique pitches in the game - an 86 mph sweeping slider with 18.6 inches of horizontal break that he threw 85% of the time. The average velocity of a sweeper or slider with 17-plus inches of horizontal break is a mere 80.6 mph, putting Kerkering's pitch on another level. Not to mention, his sinker approached triple digits, topping out at 98.8 mph during the playoffs. It's clear Kerkering has the stuff of a future closer, possibly as early as 2024, but his control is likely to impact whether or not that occurs this season.
More Fantasy News
Lands on IL
PPhiladelphia Phillies
Hamstring
March 25, 2026
The Phillies placed Kerkering (hamstring) on the 15-day injured list Wednesday.
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Opening season on IL
PPhiladelphia Phillies
Hamstring
March 22, 2026
Kerkering (hamstring) will begin the regular season on the injured list, Matt Gelb of The Athletic reports.
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Cleared to pitch in minors game
PPhiladelphia Phillies
March 16, 2026
Kerkering (hamstring) is slated to make an appearance Tuesday in a minor-league game on the back fields of camp, Lochlahn March of The Philadelphia Inquirer reports.
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Could pitch Tuesday after live BP
PPhiladelphia Phillies
Hamstring
March 14, 2026
Kerkering (hamstring) said after throwing a live batting practice session Saturday that he expects to pitch in Tuesday's Grapefruit League game against the Twins, Todd Zolecki of MLB.com reports.
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Scheduled for live BP Saturday
PPhiladelphia Phillies
Hamstring
March 12, 2026
Kerkering (hamstring) will throw a live batting practice session Saturday, Scott Lauber of The Philadelphia Inquirer reports.
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Latest Fantasy Rumors
Benefiting from rehab assignment
PPhiladelphia Phillies
April 12, 2024
Kerkering noted Friday that he's been getting a better feel for his two-seam fastball during his rehab assignment, Alex Coffey of The Philadelphia Inquirer reports.
Analysis
Kerkering said that his time in the minors and "seeing different hitters and seeing what they do" has helped him figure out how to better use his two-seamer. He started the season on the 15-day injured list due to a right forearm strain and a bad case of the flu that kept him from pitching in Grapefruit League games after March 1. In his latest outing with Single-A Fort Myers, Kerkering pitched a scoreless inning with three strikeouts, and he is expected to return to the Phillies' bullpen this weekend. The 23-year-old has the makings of a future closer.
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