60-Day IL
Injury Elbow
Est. Return 9/21/2023
2023 Stats
W-L
2-1
ERA
2.50
WHIP
1.56
K
23
SV
1
Rest-of-Season Projections
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

Out indefinitely after appendectomy
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.
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.
Pitching Stats
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2023
2022
2023 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+
What part of the game does Zach Jackson generally pitch?
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
BAA | K | BB | H | HR | ||||
---|---|---|---|---|---|---|---|---|
Since 2021vs Left | .156 | 38 | 18 | 15 | 1 | |||
Since 2021vs Right | .226 | 52 | 25 | 31 | 1 | |||
2023vs Left | .182 | 12 | 3 | 6 | 0 | |||
2023vs Right | .333 | 11 | 7 | 12 | 1 | |||
2022vs Left | .143 | 26 | 15 | 9 | 1 | |||
2022vs Right | .188 | 41 | 18 | 19 | 0 | |||
2021vs Left | 0 | 0 | 0 | 0 | 0 | |||
2021vs Right | 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
ERA | WHIP | IP | K/9 | BB/9 | |||||
---|---|---|---|---|---|---|---|---|---|
Since 2021Home | 3.71 | 1.44 | 34.0 | 12.2 | 6.4 | ||||
Since 2021Away | 1.97 | 1.25 | 32.0 | 12.4 | 5.3 | ||||
2023Home | 3.27 | 1.64 | 11.0 | 10.6 | 6.5 | ||||
2023Away | 1.29 | 1.43 | 7.0 | 12.9 | 2.6 | ||||
2022Home | 3.91 | 1.35 | 23.0 | 12.9 | 6.3 | ||||
2022Away | 2.16 | 1.20 | 25.0 | 12.2 | 6.1 | ||||
2021Home | 0 | 0 | 0 | 0 | 0 | ||||
2021Away | 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.
* 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
2.30K/9
11.5BB/9
5.0HR/9
0.5Fastball
93.1 mphERA
2.50WHIP
1.56BABIP
.380GB/FB
0.62Left On Base
78.9%Exit Velocity
79.5 mphBarrels/BBE
1.9%Spin Rate
2215 rpmBalls 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
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
Jackson (elbow) began a rehab assignment with Low-A Stockton on Wednesday.
ANALYSIS
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Completes another bullpen session
Jackson (elbow) threw another bullpen session Saturday, the Associated Press reports.
ANALYSIS
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No issues after bullpen session
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
Jackson (elbow) is slated to throw a bullpen session Saturday, the team's official site reports.
ANALYSIS
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