Jon Duplantier
27-Year-Old PitcherSP
 Free Agent  
Out
Injury Lat
Est. Return 2/1/2022
2021 Fantasy Outlook
After working out of the Diamondbacks' bullpen in 2019, Duplantier was ticketed to begin 2020 with Triple-A Reno, stretching back out as a starter. Even with no minor-league season, he was going to be in the mix for the fifth spot in Arizona's rotation when the season commenced, but elbow soreness -- first incurred in March -- slowed his ramp up in summer camp. Duplantier's elbow soreness persisted to the point where he wasn't able to pitch at all last season. However, with no structural damage in the elbow, Arizona is hopeful Duplantier will be ready to compete for a job in the spring, though it's unclear if it will be as a starter or reliever. Regardless, Duplantier has a long ways to go before having any fantasy appeal. Step 1 is showing he's healthy. His minor-league pedigree makes Duplantier worth tracking. He could rise up the ranks quickly in the bullpen. Read Past Outlooks
RANKSFrom Preseason
#601
ADP
$Released by the Diamondbacks in July of 2021.
Released by Diamondbacks
PFree Agent  
Lat
July 28, 2021
Duplantier (lat) was released by Arizona on Wednesday, Nick Piecoro of Arizona Republic reports.
ANALYSIS
Duplantier was once considered a top prospect with a promising future in the majors. However, his career to this point has been derailed by both injury and poor performance. He's currently dealing with a lat strain that will likely prevent him from pitching again this season.
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Pitching Stats
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2021
2019
2021 MLB Game Log
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Scoring
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2019 MLB Game Log
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Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
68
Last 10 Games
68
Last 5 Games
68
How many pitches does Jon Duplantier 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 Jon Duplantier 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 2019
 
 
-19%
BAA vs LHP
2021
 
 
-19%
BAA vs LHP
2020
No Stats
2019
 
 
-19%
BAA vs LHP
BAA Batters K BB H 2B 3B HR
Since 2019vs Left .261 105 26 16 23 5 0 2
Since 2019vs Right .321 128 20 10 35 7 0 5
2021vs Left .286 33 6 5 8 1 0 2
2021vs Right .355 37 6 3 11 2 0 3
2020vs Left 0 0 0 0 0 0 0 0
2020vs Right 0 0 0 0 0 0 0 0
2019vs Left .250 72 20 11 15 4 0 0
2019vs Right .308 91 14 7 24 5 0 2
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2019
 
 
-20%
ERA at Home
2021
 
 
-23%
ERA on Road
2020
No Stats
2019
 
 
-2%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2019Home 6.23 1.73 34.2 1 1 0 9.1 4.7 0.8
Since 2019Away 7.80 1.60 15.0 0 3 1 6.6 4.8 2.4
2021Home 15.00 2.50 6.0 0 1 0 7.5 3.0 3.0
2021Away 11.57 1.71 7.0 0 2 0 9.0 7.7 3.9
2020Home 0 0 0 0 0 0 0 0 0
2020Away 0 0 0 0 0 0 0 0 0
2019Home 4.40 1.57 28.2 1 0 0 9.4 5.0 0.3
2019Away 4.50 1.50 8.0 0 1 1 4.5 2.3 1.1
More Splits View More Split Stats
Stat Review
How does Jon Duplantier 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
1.50
 
K/9
8.3
 
BB/9
5.5
 
HR/9
3.5
 
Fastball
91.2 mph
 
ERA
13.15
 
WHIP
2.08
 
BABIP
.362
 
GB/FB
1.77
 
Left On Base
42.9%
 
Exit Velocity
81.8 mph
 
Barrels/BBE
8.7%
 
Spin Rate
2155 rpm
 
Balls Hit 95+ MPH
25.0%
 
Swinging Strike
8.1%
 
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 Jon Duplantier
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Past Fantasy Outlooks
2020
2019
2018
Duplantier made his big-league debut just days into the 2019 season, though injuries, role changes and demotions prevented him from fully establishing himself. He ended the year with three starts and 12 relief appearances in the majors, posting a 4.42 ERA in 36.2 innings. Neither his 20.9 K% nor his 11.0 BB% were particularly good, but the mediocre start to his career shouldn't kill all hope for Duplantier's major-league future. Despite his poor big-league walk rate (and his significantly-worse 16.7 BB% in 38.0 Triple-A innings), he's generally received good marks for his command. The biggest thing working against Duplantier is durability, or lack thereof; he's totaled 175.2 innings over the past two years (including the 2018 AFL), with more shoulder trouble eating into his 2019. If those issues force Duplantier to the bullpen, he'll have limited value barring an unexpected leap into the closer role.
Duplantier is among the most skilled pitchers in the minor leagues, but durability is a big question mark. After he managed to throw 136 innings in 2017, that number fell to just 74 this past season as Duplantier dealt with hamstring and, more notably, biceps issues. This came after Duplantier missed the entire 2015 season with a shoulder injury and after he battled elbow soreness during his first year of pro ball in 2016. He made up for some lost time this past year in the Arizona Fall League, throwing 21.2 innings and fanning 32 against some of the most polished hitting prospects in the game, but in the end he was still under the century mark in total. His slider is an impressive swing-and-miss pitch and Duplantier can get both strikeouts and groundballs with the heater. Add in plus command and Duplantier has clear mid-rotation potential, but consider us skeptical that he can hold up to the rigors of a major-league season year-in and year-out.
Most pitchers from Rice are overused to the point that they are shells of themselves once they get into pro ball. This, coupled with the fact that he dealt with a shoulder injury in 2015, is how Duplantier fell to the Diamondbacks in the third round in 2016. So far the 6-foot-4 righty has been better than anyone could have imagined. He led qualified minor-league pitchers with a 1.39 ERA across stops at Low-A and High-A last year -- the second lowest minor-league ERA over the last 25 years, trailing only Justin Verlander's 1.29 mark from 2005. Duplantier commands a plus fastball, two potentially above-average breaking balls in his slider and curveball, and an average changeup. That pitch mix, while deep, doesn't quite match his absurd production. Considering he turns 24 in July and will be making his Double-A debut this year, it's too early to say he has frontline upside. A better bet is that he struggles at times in the upper levels and settles in as a mid-rotation starter.
More Fantasy News
Reinstated, sent down
PArizona Diamondbacks  
July 3, 2021
Duplantier (finger) was reinstated from the 10-day injured list and optioned to Triple-A Reno on Saturday, Zach Buchanan of The Athletic reports.
ANALYSIS
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Sent down
PArizona Diamondbacks  
June 14, 2021
Duplantier was optioned to Triple-A Reno on Monday, Jody Jackson of Bally Sports Arizona reports.
ANALYSIS
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Turns in another rough outing
PArizona Diamondbacks  
June 14, 2021
Duplantier (0-3) allowed six runs on six hits over 1.1 innings as he took the loss to the Angels on Friday. He did not strike out nor walk a batter in the effort.
ANALYSIS
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Disastrous fourth leads to loss
PArizona Diamondbacks  
June 8, 2021
Duplantier (0-2) lost Tuesday's start against Oakland, allowing four runs on two hits and three walks with four strikeouts in a 5-2 defeat.
ANALYSIS
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Surrenders five earned runs
PArizona Diamondbacks  
June 3, 2021
Duplantier (0-1) allowed five earned runs on four hits and three walks while striking out three across four innings to take the loss Thursday against the Brewers.
ANALYSIS
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