Daulton Jefferies
25-Year-Old PitcherSP
Oakland Athletics AAA
2020 Fantasy Outlook
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. Read Past Outlooks
RANKSFrom Preseason
#600
ADP
Add To Watchlist
$Signed a contract with the Athletics in June of 2016.
Returns to alternate site
POakland Athletics  AAA
September 14, 2020
The Athletics optioned Jefferies to their alternate training site Sunday.
ANALYSIS
Jefferies was designated as Oakland's 29th man for Saturday's doubleheader with the Rangers and made his MLB debut in the first game of the twin bill. He was roughed up in the start, lasting only two innings while giving up five runs on five hits and two walks. Oakland will require a sixth starter in the final week of the season with a doubleheader in Seattle on tap for Sept. 26, and Jefferies or Mike Minor would seemingly represent the most logical options to fill the opening in the rotation.
Read More News
Pitching Stats
Loading Pitching Stats...
2020
2020 MLB Game Log
Calculate Stats Over Time
Just click on any two dates.
Scoring
FanDuel
DraftKings
Yahoo DFS
FantasyDraft
Head2Head
Loading Pitching Game Log...
Minor League Game Log
Calculate Stats Over Time
Just click on any two dates.
Loading Minor League Pitching Game Log...
Pitching Appearances Breakdown
Average Pitch Count
53
Last 10 Games
53
Last 5 Games
53
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 2018
 
 
-14%
BAA vs RHP
2020
 
 
-14%
BAA vs RHP
2019
No Stats
2018
No Stats
BAA Batters K BB H 2B 3B HR
Since 2018vs Left .500 6 0 2 2 0 0 2
Since 2018vs Right .429 7 1 0 3 0 0 0
2020vs Left .500 6 0 2 2 0 0 2
2020vs Right .429 7 1 0 3 0 0 0
2019vs Left 0 0 0 0 0 0 0 0
2019vs Right 0 0 0 0 0 0 0 0
2018vs Left 0 0 0 0 0 0 0 0
2018vs Right 0 0 0 0 0 0 0 0
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2018
 
 
-100%
ERA at Home
2020
 
 
-100%
ERA at Home
2019
No Stats
2018
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2018Home 0 0 0 0 0 0 0 0 0
Since 2018Away 22.50 3.50 2.0 0 1 0 4.5 9.0 9.0
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
2019Home 0 0 0 0 0 0 0 0 0
2019Away 0 0 0 0 0 0 0 0 0
2018Home 0 0 0 0 0 0 0 0 0
2018Away 0 0 0 0 0 0 0 0 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
0.50
 
K/9
4.5
 
BB/9
9.0
 
HR/9
9.0
 
Fastball
94.3 mph
 
ERA
22.50
 
WHIP
3.50
 
BABIP
.393
 
GB/FB
1.00
 
Left On Base
47.6%
 
Exit Velocity
84.8 mph
 
Barrels/BBE
5.3%
 
Spin Rate
2242 rpm
 
Balls Hit 95+ MPH
26.3%
 
Swinging Strike
11.3%
 
Prospect Rankings History
Advanced Pitching Stats
Loading Advanced Pitching Stats...
Defensive Stats
Loading MLB Defensive Stats...
Stats Vs Today's Lineup
Want more matchup stats?
Loading Matchup Stats...
Our full team depth charts are reserved for RotoWire subscribers.
Subscribe Now
Recent RotoWire Articles Featuring Daulton Jefferies
Weekly Pitcher Rankings: Down the Stretch They Come
5 days ago
Todd Zola ranks the week's pitching as the season comes into the final stretch. What's that mean for aces like Gerrit Cole with the playoffs on tap?
AL FAAB Factor: Waiver Pickups of the Week
11 days ago
Erik Siegrist looks over the available waiver talent in the AL and thinks Nate Lowe is positioned to make a big impact for the Rays down the stretch.
Farm Futures: Is Stashing Season Dead?
36 days ago
James Anderson breaks down everything prospect related for redraft leagues, including a breakdown of why Tigers' righty Casey Mize really benefits from the shortened season.
Dream11 Fantasy Baseball: Athletics at Mariners
54 days ago
Juan Pablo Aravena breaks down Saturday's Athletics at Mariners game for Dream11 contests.
Dream11 Fantasy Baseball: Rockies at Athletics
57 days ago
Juan Pablo Aravena breaks down Wedneday's Colorado Rockies at Oakland Athletics matchup for Dream11 contests.
More Fantasy News
Takes loss in debut
POakland Athletics  AAA
September 12, 2020
Jefferies (0-1) took the loss in Game 1 of Saturday's doubleheader against the Rangers after surrendering five runs on five hits with one strikeout and two walks over two innings.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Officially serving as 29th man
POakland Athletics  AAA
September 12, 2020
Jefferies was called up by the Athletics as the 29th man ahead of his scheduled start for Game 1 of Saturday's doubleheader.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Set for big-league debut Saturday
POakland Athletics  AAA
September 11, 2020
Jefferies will be called up from the alternate training site to start one of the games in Saturday's doubleheader against the Rangers, Susan Slusser of the San Francisco Chronicle reports.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Awaiting chance at alternate site
POakland Athletics  AAA
August 7, 2020
Jefferies is on the top of the depth chart if Oakland needs to promote a starting pitcher from the alternate training site, Susan Slusser and Matt Kawahara of the San Francisco Chronicle report.
ANALYSIS
Subscribe now to instantly reveal our take on this news.
Optioned to Triple-A
POakland Athletics  AAA
Biceps
March 6, 2020
Jefferies (biceps) was optioned to Triple-A Las Vegas on Friday, Chris Haft of MLB.com reports.
ANALYSIS
Subscribe now to instantly reveal our take on this news.