Drey Jameson

Drey Jameson

27-Year-Old PitcherRP
Arizona Diamondbacks AAA
2025 Fantasy Outlook
We haven't seen Jameson on a major-league mound since July of 2023, as he eventually required Tommy John surgery in September of that year. The expectation is that he will be ready to roll on Opening Day of this season, and the Diamondbacks plan for him to operate in a relief role. Jameson came up through the minors and broke into the majors as a starter, but he had been pitching in relief before his elbow blew out and was having success. Prior to the injury, Jameson reached the upper-90s with his fastball with regularity while also showcasing a wipeout slider. He could be a potential closer if things break right, but there are unknowns with Jameson in 2025 in regard to how his stuff bounces back from surgery and what his usage will look like. Read Past Outlooks
RANKS
Rest of Season
From Preseason
#364
ADP
$Signed a one-year contract with the Diamondbacks in March of 2025.
Demoted to Triple-A
PArizona Diamondbacks  AAA
April 28, 2025
Jameson was optioned to Triple-A Reno on Monday, Aaron Hughes of SI.com reports.
ANALYSIS
Jameson appeared in three games during his stint with the big-league club, one of which resulted in his first save April 20 against the Cubs. This move will presumably clear a roster spot for the return of Kevin Ginkel (shoulder) from the 15-day injured list, though the club has yet to officially announce a corresponding move.
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Pitching Stats
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2025
2024
2023
2022
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2024 MLB Game Log
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2023 MLB Game Log
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2022 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
18
Last 10 Games
18
Last 5 Games
18
How many pitches does Drey Jameson 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 Drey Jameson 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
Even Split
2025
 
 
-57%
BAA vs LHP
2024
No Stats
2023
 
 
-5%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .268 91 15 8 22 4 0 2
Since 2023vs Right .268 96 22 13 22 4 0 4
2025vs Left .286 8 0 1 2 1 0 0
2025vs Right .667 5 0 2 2 1 0 0
2024vs Left 0 0 0 0 0 0 0 0
2024vs Right 0 0 0 0 0 0 0 0
2023vs Left .267 83 15 7 20 3 0 2
2023vs Right .253 91 22 11 20 3 0 4
Home/Away Pitching Splits
Since 2023
 
 
-13%
ERA at Home
2025
 
 
-100%
ERA on Road
2024
No Stats
2023
 
 
-21%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2023Home 3.14 1.47 28.2 2 2 0 7.5 4.1 0.6
Since 2023Away 3.60 1.53 15.0 1 0 2 7.8 4.8 2.4
2025Home 4.50 3.50 2.0 0 1 0 0.0 13.5 0.0
2025Away 0.00 0.00 1.0 0 0 1 0.0 0.0 0.0
2024Home 0 0 0 0 0 0 0 0 0
2024Away 0 0 0 0 0 0 0 0 0
2023Home 3.04 1.31 26.2 2 1 0 8.1 3.4 0.7
2023Away 3.86 1.64 14.0 1 0 1 8.4 5.1 2.6
Minor League Left/Right Pitching Splits (AAA)
Since 2023
 
 
-4%
BAA vs LHP
2025
 
 
-48%
BAA vs LHP
2024
No Stats
2023
 
 
-11%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .268 65 14 5 15 5 0 2
Since 2023vs Right .278 86 20 6 22 4 1 2
2025vs Left .182 11 4 0 2 0 0 1
2025vs Right .353 17 6 0 6 1 0 1
2024vs Left 0 0 0 0 0 0 0 0
2024vs Right 0 0 0 0 0 0 0 0
2023vs Left .289 54 10 5 13 5 0 1
2023vs Right .258 69 14 6 16 3 1 1
Stat Review
How does Drey Jameson 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
0.00
 
K/9
0.0
 
BB/9
9.0
 
HR/9
0.0
 
Fastball
97.3 mph
 
ERA
3.00
 
WHIP
2.33
 
BABIP
.321
 
GB/FB
4.00
 
Left On Base
71.4%
 
Exit Velocity
87.3 mph
 
Barrels/BBE
0.0%
 
Spin Rate
2195 rpm
 
Balls Hit 95+ MPH
33.3%
 
Swinging Strike
5.7%
 
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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Past Fantasy Outlooks
2024
2023
Jameson, coming off an impressive four-start run late in 2022, competed for a starting job during Spring Training but lost out to Ryne Nelson and began 2023 as a multi-inning reliever in the majors. He pitched as both a starter and reliever, but it was out of the bullpen where Jameson popped, posting a 2.81 ERA over 32 relief innings. The right-hander, who was sent down to the minors in May, rediscovered his slider there and shined out of the bullpen after being recalled. Everything changed in July, when he felt something in his forearm, which eventually turned out to be a ligament in his elbow. Jameson put off surgery, hoping to pitch again, but the right-hander was eventually shut down and underwent Tommy John surgery in September. As such, he's unlikely to pitch in 2024.
Jameson broke out as a high-upside starting pitching prospect in 2021, doing his best to shelve reliever concerns that stemmed from his stature (6-foot, 165 pounds) and control. However in 2022, he had to navigate extreme hitter's parks in Amarillo, Reno and the Pacific Coast League in general. He quickly forced a promotion from Double-A, but the PCL got the better of him over the span of 22 starts. It's not like he righted the ship prior to his MLB promotion -- he gave up 17 earned runs in his final 15.2 innings (three starts) for Reno. However, he was closer to the pitcher he was at Double-A against big-league hitters, going at least five innings in all four starts while tallying a 1.48 ERA, 1.11 WHIP and 24:7 K:BB in 24.1 innings. Jameson primarily threw his four-seamer, two-seamer and slider in the big leagues, also mixing in a changeup and curveball. The two mid-90s fastballs (can touch 97 mph) and mid-80s slider were his strikeout weapons, and while he did well in a small sample against lefty hitters in the majors, opposite-handed hitters logged a .933 OPS against him in the minors (.701 OPS against RHB). He might not have the truly dominant fastball/slider combo to get by without an offspeed pitch that neutralizes lefties, but the Diamondbacks will give him every chance to develop as a big-league starter in 2023.
More Fantasy News
Picks up first save
PArizona Diamondbacks  AAA
April 20, 2025
Jameson earned a save with a scoreless inning during Sunday's extra-innings win over the Cubs.
ANALYSIS
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Up from Triple-A
PArizona Diamondbacks  AAA
April 19, 2025
The Diamondbacks recalled Jameson from Triple-A Reno on Saturday.
ANALYSIS
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Bid for Opening Day roster ends
PArizona Diamondbacks  AAA
March 19, 2025
The Diamondbacks optioned Jameson to Triple-A Reno on Wednesday.
ANALYSIS
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Allows first spring run
PArizona Diamondbacks  AAA
March 11, 2025
Jameson allowed one run on two hits and one walk over one inning of relief in Monday's Cactus League game against the Dodgers.
ANALYSIS
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Making spring debut Wednesday
PArizona Diamondbacks  AAA
February 26, 2025
Jameson (elbow) is scheduled to make his Cactus League debut in Wednesday's game against the Brewers, Jack Sommers of SI.com reports.
ANALYSIS
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