Daulton Jefferies

27-Year-Old PitcherSP
60-Day IL
Injury Arm
Est. Return 3/1/2023
2022 Fantasy Outlook
Arm injuries always seem to be the story with Jefferies. In 2021 it was biceps tendinitis early in the year and a flexor strain at the end of the year. The 6-foot righty has thrown 193.1 pro innings since getting drafted in 2016. He has nine strikeouts in 17 career MLB innings, so even if he is more durable than expected, there's not a high fantasy ceiling. When healthy, he has shown solid command and a starter's pitch mix. The A's will let him compete for a rotation spot in spring training, but there's little reason to invest in drafts. Read Past Outlooks
RANKSFrom Preseason
#590
ADP
$Signed a contract with the Athletics in June of 2016.
Done for season
POakland Athletics
Arm
June 14, 2022
Jefferies (thoracic outlet syndrome) won't return this season, Matt Kawahara of the San Francisco Chronicle reports.
ANALYSIS
He had thoracic outlet syndrome surgery Monday, which included the removal of his first rib. Jefferies' entire pro career has been altered by consistent arm injuries, and while he has made it back from Tommy John surgery, this next challenge could be even tougher.
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Pitching Stats
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2022
2021
2020
2022 MLB Game Log
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Scoring
FanDuel
DraftKings
Yahoo DFS
FantasyDraft
Head2Head
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2021 MLB Game Log
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2020 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
76
Last 10 Games
76
Last 5 Games
82
How many pitches does Daulton Jefferies 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 Daulton Jefferies 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 2020
 
 
-16%
BAA vs LHP
2022
 
 
-25%
BAA vs LHP
2021
 
 
-20%
BAA vs RHP
2020
 
 
-14%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2020vs Left .250 113 21 8 26 6 0 3
Since 2020vs Right .298 130 16 6 36 12 0 4
2022vs Left .243 80 17 5 18 3 0 1
2022vs Right .322 92 11 3 28 10 0 3
2021vs Left .231 27 4 1 6 3 0 0
2021vs Right .185 31 4 3 5 2 0 1
2020vs Left .500 6 0 2 2 0 0 2
2020vs Right .429 7 1 0 3 0 0 0
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2020
 
 
-17%
ERA at Home
2022
 
 
-10%
ERA on Road
2021
 
 
-38%
ERA at Home
2020
 
 
-100%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2020Home 5.20 1.27 27.2 0 4 0 6.8 1.3 0.7
Since 2020Away 6.28 1.43 28.2 2 4 0 5.0 3.1 1.6
2022Home 6.00 1.38 21.0 0 4 0 7.7 1.3 0.9
2022Away 5.40 1.36 18.1 1 3 0 4.9 2.5 1.0
2021Home 2.70 0.90 6.2 0 0 0 4.1 1.4 0.0
2021Away 4.32 1.08 8.1 1 0 0 5.4 3.2 1.1
2020Home 0 0 0 0 0 0 0 0 0
2020Away 22.50 3.50 2.0 0 1 0 4.5 9.0 9.0
More Splits View More Split Stats
Stat Review
How does Daulton Jefferies 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
3.50
 
K/9
6.4
 
BB/9
1.8
 
HR/9
0.9
 
Fastball
92.5 mph
 
ERA
5.72
 
WHIP
1.37
 
BABIP
.336
 
GB/FB
1.48
 
Left On Base
57.9%
 
Exit Velocity
84.6 mph
 
Barrels/BBE
5.0%
 
Spin Rate
1999 rpm
 
Balls Hit 95+ MPH
26.0%
 
Swinging Strike
9.7%
 
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
2021
2020
After posting strong numbers at Double-A in 2019, Jefferies spent last season at the Athletics' alternate training site and made his big-league debut in September as the 29th man for a doubleheader, although he got a rude welcome from the Rangers. The right-hander features a mid-90s fastball, a potentially plus changeup and good command, mixing in a curveball and cutter. Oakland's careful approach with his recovery from Tommy John surgery in 2017 would seem to leave the 25-year-old ready for his first full big-league campaign. The question is where he fits onto the staff. If A.J. Puk is healthy, there's no room for Jefferies in the rotation, but he could provide some length in the bullpen behind Puk and Jesus Luzardo. Conversely, the team could opt to keep him stretched out at Triple-A. That makes him a risky fantasy option in 2021 drafts, but if a starting role opens up, Jefferies does have upside.
April 2017 Tommy John surgery cost Jefferies almost two full seasons. His below-average recovery time was worrisome, but he came back with a vengeance, logging a 93:9 K:BB in 79 innings, primarily at Double-A. The No. 37 overall pick in 2016 sat at 95 mph with his fastball in his final start of the year and had his signature plus changeup working throughout his first full campaign. The A's were very careful with him -- he threw between three and 3.2 innings in all 26 appearances -- so his numbers are a little inflated due to the fact that he never had to face the same hitter more than twice. The 6-foot, 185-pound righty still needs to prove he can handle a starter's workload and needs to sharpen his breaking ball. Even so, the potential for a plus fastball, plus changeup and plus command from a pitcher who should join the big-league rotation this summer makes him relevant in all formats.
More Fantasy News
Requires surgery
POakland Athletics
Arm
June 8, 2022
Jefferies will undergo surgery to address his thoracic outlet syndrome, Matt Kawahara of the San Francisco Chronicle reports.
ANALYSIS
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Getting second opinion
POakland Athletics
Arm
June 5, 2022
Jefferies will visit Dr. Gregory Pearl on Tuesday in Dallas to get a second opinion on his thoracic outlet syndrome diagnosis, Martin Gallegos of MLB.com reports.
ANALYSIS
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Cleared to play catch
POakland Athletics
Arm
June 1, 2022
Athletics manager Mark Kotsay said Jefferies (arm) played catch Wednesday, Matt Kawahara of the San Francisco Chronicle reports.
ANALYSIS
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Moves to 60-day IL
POakland Athletics
Arm
May 29, 2022
Jefferies (arm) was transferred from the 15-day injured list to the 60-day injured list Sunday, Matt Kawahara of the San Francisco Chronicle reports.
ANALYSIS
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Managing thoracic outlet syndrome
POakland Athletics
Arm
May 20, 2022
Jefferies was diagnosed with thoracic outlet syndrome Friday, Matt Kawahara of the San Francisco Chronicle reports.
ANALYSIS
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