Griffin Jax

Griffin Jax

29-Year-Old PitcherRP
Minnesota Twins
2024 Fantasy Outlook
Jax led Twins relievers with 71 appearances and 23 holds last season as the team's primary setup man. The 29-year-old racked up 10 losses to lead all relievers, but his ratios and underlying metrics were solid. Jax's 3.3 barrel percentage allowed was in the 97th percentile, while his hard-hit percentage, average exit velocity and 56.8 percent ground ball rate were all well above-average. His 2.86 xERA was a full point better than his 3.86 ERA, which shows there's room for improvement in that category. Expect Jax to rack up 20-plus holds and a handful of ancillary saves again in 2024. Read Past Outlooks
RANKSFrom Preseason
#472
ADP
$Signed a one-year contract with the Twins in June of 2021.
Escapes with fifth save
PMinnesota Twins
May 11, 2024
Jax gave up a run on two hits and a walk in the ninth inning Friday while striking out one, recording his fifth save of the season in a 3-2 win over the Blue Jays.
ANALYSIS
Jhoan Duran got the call in the eighth inning to face the top of Toronto's order, leaving the ninth for Jax, but Jax ran into trouble with two outs after a Bo Bichette single kicked off a Jays rally. Twins manager Rocco Baldelli has been using Duran as a relief ace rather than a pure closer and Duran has three saves and three holds in six appearances since coming off the IL in late April, but Jax hasn't been the sole beneficiary of the available opportunities -- Caleb Thielbar and Cole Sands have also picked up saves since Duran's season debut. Brock Stewart (shoulder) could also end up in that mix once he gets healthy. Jax has a 3.06 ERA, 1.13 WHIP and 23:7 K:BB through 17.2 innings on the season, and while Duran should see the majority of the save chances for the Twins, his main understudy could creep into the low double digits in saves by the time the season is done.
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Pitching Stats
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2024
2023
2022
2021
2024 MLB Game Log
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2023 MLB Game Log
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2022 MLB Game Log
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2021 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
15
Last 10 Games
17
Last 5 Games
13
How many pitches does Griffin Jax 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 Griffin Jax 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 2022
 
 
-9%
BAA vs LHP
2024
 
 
-29%
BAA vs LHP
2023
 
 
-4%
BAA vs RHP
2022
 
 
-16%
BAA vs LHP
BAA Batters K BB H 2B 3B HR
Since 2022vs Left .204 260 69 24 47 8 2 6
Since 2022vs Right .223 388 105 22 80 10 2 7
2024vs Left .143 40 11 4 5 1 0 1
2024vs Right .200 44 17 3 8 1 0 0
2023vs Left .238 117 35 11 25 5 2 2
2023vs Right .228 157 33 8 33 4 0 3
2022vs Left .189 103 23 9 17 2 0 3
2022vs Right .224 187 55 11 39 5 2 4
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2022
 
 
-40%
ERA on Road
2024
 
 
-47%
ERA at Home
2023
 
 
-58%
ERA on Road
2022
 
 
-35%
ERA on Road
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2022Home 4.30 1.14 81.2 9 10 7 11.0 3.4 0.9
Since 2022Away 2.56 1.03 77.1 7 6 3 8.6 1.7 0.6
2024Home 1.74 0.87 10.1 1 0 3 13.1 2.6 0.0
2024Away 3.27 1.00 11.0 2 2 2 10.6 3.3 0.8
2023Home 5.40 1.23 33.1 3 7 3 10.8 3.5 1.1
2023Away 2.25 1.13 32.0 3 3 1 7.9 1.7 0.3
2022Home 4.03 1.13 38.0 5 3 1 10.7 3.6 0.9
2022Away 2.62 0.96 34.1 2 1 0 8.7 1.3 0.8
More Splits View More Split Stats
Stat Review
How does Griffin Jax 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
4.00
 
K/9
11.8
 
BB/9
3.0
 
HR/9
0.4
 
Fastball
96.8 mph
 
ERA
2.53
 
WHIP
0.94
 
BABIP
.272
 
GB/FB
1.33
 
Left On Base
75.3%
 
Exit Velocity
83.1 mph
 
Barrels/BBE
3.1%
 
Spin Rate
2588 rpm
 
Balls Hit 95+ MPH
18.4%
 
Swinging Strike
15.5%
 
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 Griffin Jax See More
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14 days ago
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42 days ago
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59 days ago
Brad Johnson writes about pitching happenings this week and in Rotation Ramblings, he notes Luis Gil will get an extended look in the rotation with Gerrit Cole's injury.
Past Fantasy Outlooks
2023
2022
2021
After making 14 starts during his rookie 2021 season, Jax transitioned to full-time relief last year. He didn't make the Twins' Opening Day roster, but was recalled a few days after the season started and quickly settled into his new multi-inning role out of the bullpen. Increased velocity (+2.8 mph on average) and a pitch mix adjustment followed the role change, as Jax's slider (48% usage) replaced his 4-seamer (34%) as his primary offering. The 28-year-old improved both his strikeout (26.9%) and walk (6.9%) rates with a 78:20 K:BB ratio over 72.1 innings. He also induced grounders at a 47.3% rate to create a profile that should be on deeper mixed league radars regardless of role. Jax quickly ascended Minnesota's leverage ladder and became one of their primary setup men, tying for the team lead with 18 holds. Expect plenty of volume - Jax was 11th among qualified relievers with 72.1 innings - along with decent ratios and potentially even saves in 2023.
Jax put together an up-and-down rookie campaign with a 6.37 ERA, 1.35 WHIP and 65:29 K:BB across 82 innings. After starting 14 games in 2021, he'll move to the bullpen and try to win a middle relief role. Moving forward, he'll need to do a better job of keeping the ball in the park to find sustained success, as his 2.52 HR/9 in 2021 ranked third-highest among pitchers who threw at least 50 innings. He's had good control in the minors and success despite mediocre strikeout rates. He could be a late bloomer at age 27, as he threw just 40 minor league games from 2016 to 2019 as his ability to play minor league baseball was severely limited by Air Force obligations.
Jax, a 2016 third-round draft pick, pitched in just 40 minor league games from 2016 to 2019 as his ability to play minor league baseball was severely limited by Air Force obligations. While he's a bit old for a prospect (26 this season), he's shown promise at higher levels with a 2.67 ERA and 1.94 BB/9 at Double-A in 2019. He hasn't had great strikeout rates (6.7 K/9 in 2019), However. Still, he's still a bit of an unknown given his sparse minor league career. Minnesota should get a better picture with a full season in 2020. He could add rotation depth at Triple-A if all goes well.
More Fantasy News
Duran returns from IL
PMinnesota Twins
April 30, 2024
Jax will likely shift into a setup role since the Twins reinstated Jhoan Duran (oblique) from the 15-day injured list Tuesday.
ANALYSIS
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Secures fourth save
PMinnesota Twins
April 26, 2024
Jax earned the save Thursday against the White Sox, striking out one over a scoreless two-thirds of an inning.
ANALYSIS
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Notches another save
PMinnesota Twins
April 24, 2024
Jax pitched a perfect ninth inning and struck out one to pick up his third save of the season Wednesday against the White Sox.
ANALYSIS
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Picks up save No. 2
PMinnesota Twins
April 20, 2024
Jax pitched a perfect ninth inning with two strikeouts against the Tigers on Saturday en route to his second save of the season.
ANALYSIS
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Used in eighth inning
PMinnesota Twins
April 4, 2024
Jax threw a scoreless eighth inning in Wednesday's win at Milwaukee while Steven Okert pitched a scoreless ninth inning. Okert would have be in line for a save had the Twins not scored in the top of the ninth inning. "At that point in the game, Okert with the experience was probably the answer," manager Rocco Baldelli told the Minneapolis Star Tribune.
ANALYSIS
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