Zach Jackson

Zach Jackson

28-Year-Old PitcherRP
Oakland Athletics
60-Day IL
Injury Elbow
Est. Return 9/21/2023
2023 Fantasy Outlook
After walking 5.6 batters per nine innings across five minor-league seasons, Jackson's 16.3% walk rate as a rookie was no surprise. In fact, it was the worst walk percentage among relievers who pitched at least 40 innings. However, the 28-year-old still managed to put together a solid campaign, compiling a 3.00 ERA (2.77 FIP), 1.27 WHIP and 67 strikeouts across 48 innings. He only gave up one home run all season (0.2 HR/9) and was effective against both right-handed (.188 BA) and lefty swingers (.143). Jackson quickly earned a high-leverage role for the A's, finishing finishing 2nd in the American League and 4th overall with 26 holds. A strained shoulder ended his season in August, but he's expected to be ready for camp and reclaim his role as the A's primary setup man. Read Past Outlooks
RANKSFrom Preseason
#591
ADP
$Signed a one-year contract with the Athletics in March of 2023.
Out indefinitely after appendectomy
POakland Athletics
Abdomen
August 1, 2023
Jackson (elbow) underwent an appendectomy Monday and is without a timeline to resume his rehab program, Martin Gallegos of MLB.com reports.
ANALYSIS
Jackson has made two minor-league appearances in the past week as he works on returning from a strained elbow, but his recovery from the appendectomy will put a pause on his rehab indefinitely. He struck out four and allowed two earned runs in two innings across the two rehab appearances. The right-hander has been on the injured list since mid-May.
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Pitching Stats
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2023
2022
2023 MLB Game Log
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Scoring
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2022 MLB Game Log
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Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
20
Last 10 Games
21
Last 5 Games
23
How many pitches does Zach Jackson 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 Zach Jackson 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 2021
 
 
-31%
BAA vs LHP
2023
 
 
-45%
BAA vs LHP
2022
 
 
-24%
BAA vs LHP
2021
No Stats
BAA Batters K BB H 2B 3B HR
Since 2021vs Left .156 117 38 18 15 2 0 1
Since 2021vs Right .226 165 52 25 31 7 0 1
2023vs Left .182 37 12 3 6 0 0 0
2023vs Right .333 43 11 7 12 2 0 1
2022vs Left .143 80 26 15 9 2 0 1
2022vs Right .188 122 41 18 19 5 0 0
2021vs Left 0 0 0 0 0 0 0 0
2021vs Right 0 0 0 0 0 0 0 0
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2021
 
 
-47%
ERA on Road
2023
 
 
-61%
ERA on Road
2022
 
 
-45%
ERA on Road
2021
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2021Home 3.71 1.44 34.0 2 3 2 12.2 6.4 0.3
Since 2021Away 1.97 1.25 32.0 2 1 2 12.4 5.3 0.3
2023Home 3.27 1.64 11.0 1 1 0 10.6 6.5 0.8
2023Away 1.29 1.43 7.0 1 0 1 12.9 2.6 0.0
2022Home 3.91 1.35 23.0 1 2 2 12.9 6.3 0.0
2022Away 2.16 1.20 25.0 1 1 1 12.2 6.1 0.4
2021Home 0 0 0 0 0 0 0 0 0
2021Away 0 0 0 0 0 0 0 0 0
More Splits View More Split Stats
Stat Review
How does Zach Jackson 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
2.30
 
K/9
11.5
 
BB/9
5.0
 
HR/9
0.5
 
Fastball
93.1 mph
 
ERA
2.50
 
WHIP
1.56
 
BABIP
.380
 
GB/FB
0.62
 
Left On Base
78.9%
 
Exit Velocity
79.5 mph
 
Barrels/BBE
1.9%
 
Spin Rate
2215 rpm
 
Balls Hit 95+ MPH
15.1%
 
Swinging Strike
9.9%
 
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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More Fantasy News
Logs second rehab outing
POakland Athletics
Elbow
July 30, 2023
Jackson (elbow) allowed two earned runs on two solo home runs while also recording two strikeouts over one inning in Single-A Stockton's win over Lake Elsinore on Saturday.
ANALYSIS
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Begins rehab assignment
POakland Athletics
Elbow
July 27, 2023
Jackson (elbow) began a rehab assignment with Low-A Stockton on Wednesday.
ANALYSIS
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Completes another bullpen session
POakland Athletics
Elbow
July 23, 2023
Jackson (elbow) threw another bullpen session Saturday, the Associated Press reports.
ANALYSIS
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No issues after bullpen session
POakland Athletics
Elbow
July 17, 2023
Jackson (elbow) did not feel any residual effects from Saturday's bullpen session, the team's official site reports.
ANALYSIS
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Set for bullpen session
POakland Athletics
Elbow
July 15, 2023
Jackson (elbow) is slated to throw a bullpen session Saturday, the team's official site reports.
ANALYSIS
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