J.B. Wendelken

29-Year-Old PitcherRP
2022 Fantasy Outlook
Wendelken's performance took a dip with Oakland last season and he was designated for assignment in mid-August. However, Arizona recognized his solid body of work since 2018 and claimed him off waivers. The 28-year-old earned two wins, four holds and the first two saves of his career across 20 appearances with the Diamondbacks, but he wasn't overly impressive, posting a 4.34 ERA, 6.3 K/9 and 4.3 BB/9 across 18.2 innings. Despite a subpar 2021, he remains one of the most experienced relievers in Arizona's bullpen after the team signed veteran Mark Melancon for their closer role. Wendelken could pick up a save chance or two when Melancon is unavailable, but he's more likely to be an asset for holds after posting an ERA under the 3.60 mark in three straight campaigns between 2018 and 2020. Read Past Outlooks
RANKSFrom Preseason
#598
ADP
$Signed a one-year, $850,000 contract with the Diamondbacks in November of 2021.
Reinstated from injured list
PArizona Diamondbacks
May 7, 2022
Wendelken (undisclosed) was reinstated from the COVID-19 injured list Saturday.
ANALYSIS
It's not clear whether Wendelken ever tested positive for COVID-19, but he'll rejoin the Diamondbacks' bullpen after spending a week and a half away from the team. Over seven relief appearances this year, the right-hander has posted a 4.32 ERA and 1.32 WHIP in 8.1 innings.
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Pitching Stats
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2022
2021
2020
2019
2018
2022 MLB Game Log
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2021 MLB Game Log
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2020 MLB Game Log
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2019 MLB Game Log
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2018 MLB Game Log
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Pitching Appearances Breakdown
Average Pitch Count
19
Last 10 Games
19
Last 5 Games
16
How many pitches does J.B. Wendelken 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 J.B. Wendelken 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
 
 
-2%
BAA vs RHP
2022
 
 
-67%
BAA vs LHP
2021
 
 
-21%
BAA vs RHP
2020
 
 
-10%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2020vs Left .244 146 26 23 30 4 0 3
Since 2020vs Right .239 201 50 14 44 8 0 5
2022vs Left .133 18 1 3 2 0 0 0
2022vs Right .407 29 5 1 11 1 0 2
2021vs Left .292 85 13 13 21 2 0 2
2021vs Right .230 109 26 9 23 6 0 2
2020vs Left .194 43 12 7 7 2 0 1
2020vs Right .175 63 19 4 10 1 0 1
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2020
 
 
-18%
ERA at Home
2022
 
 
-59%
ERA on Road
2021
 
 
-37%
ERA at Home
2020
 
 
-50%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2020Home 3.55 1.49 45.2 3 3 1 7.7 4.5 1.0
Since 2020Away 4.32 1.29 33.1 2 2 1 10.0 3.8 0.8
2022Home 8.22 1.83 7.2 0 1 0 4.7 4.7 2.3
2022Away 3.38 1.13 2.2 0 0 0 6.8 0.0 0.0
2021Home 3.42 1.65 23.2 2 1 1 7.6 5.7 0.8
2021Away 5.40 1.35 20.0 2 2 1 8.6 3.2 0.9
2020Home 1.26 1.05 14.1 1 1 0 9.4 2.5 0.6
2020Away 2.53 1.22 10.2 0 0 0 13.5 5.9 0.8
More Splits View More Split Stats
Stat Review
How does J.B. Wendelken 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
1.50
 
K/9
5.2
 
BB/9
3.5
 
HR/9
1.7
 
Fastball
94.3 mph
 
ERA
6.97
 
WHIP
1.65
 
BABIP
.322
 
GB/FB
3.17
 
Left On Base
63.4%
 
Exit Velocity
81.1 mph
 
Barrels/BBE
1.9%
 
Spin Rate
2195 rpm
 
Balls Hit 95+ MPH
18.9%
 
Swinging Strike
7.0%
 
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 J.B. Wendelken
NL FAAB Factor: Waiver Pickups of the Week
232 days ago
Jan Levine concludes his column for the season with a look at some late contributors and a few to keep in mind for 2022.
MLB FAAB Factor: Waiver Pickups of the Week
April 8, 2021
Jason Shebilske analyzes the top waiver-wire options for the week, including Ryan McMahon, who should get regular at-bats for the Rockies.
AL FAAB Factor: Waiver Pickups of the Week
April 4, 2021
Erik Siegrist reviews the available talent in the Junior Circuit as Kyle Isbel looks to prove he's ready for the big leagues.
Erickson's AL Tout Wars Team
March 21, 2021
Gerrit Cole was Jeff Erickson's most expensive player in the AL Tout Wars draft.
The Long Game: Opportunity Knocks
March 3, 2021
Erik Siegrist takes a look at the potential keeper-league value to be found in AL job battles, as Jared Walsh could become this year's Luke Voit.
2021 Fantasy Outlook
The A's have produced some of the top fantasy closers in recent seasons and it may now be Wendelken's time to shine in the ninth. He is not a flamethrower, but Wendelken sits 94-95 mph on average with his four-seamer, so he's no soft-tosser either. It was his slider -- which gets lumped in with his changeup on some sites -- that was next-level in 2020 as he allowed a silly .104 wOBA on the pitch, per Statcast (112 thrown). For his career, Wendelken has allowed 10 barrels among 235 batted-ball events, and he has posted an xBA below .190 in each of the past three seasons. He flipped the script and became more of a groundball pitcher last season, which is nice, although he had no homer issues to speak of anyway even when he was allowing more balls in the air. Oakland has its sights set high and brought in Trevor Rosenthal to be the successor to Liam Hendriks, so Wendelken will have to continue to prove himself in the middle innings.
More Fantasy News
Placed on injured list
PArizona Diamondbacks
Undisclosed
April 28, 2022
Wendelken was placed on the injured list for an undisclosed reason Thursday.
ANALYSIS
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Walks pair in short outing
PArizona Diamondbacks
April 13, 2022
Wendelken issued two walks over one-third of an inning in Tuesday's 2-1 loss to the Astros.
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Avoids arbitration with Arizona
PArizona Diamondbacks
November 30, 2021
Wendelken agreed to a one-year, $835,000 contract with the Diamondbacks on Tuesday, avoiding arbitration, Zach Buchanan of The Athletic reports.
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Earns win in relief
PArizona Diamondbacks
October 3, 2021
Wendelken (4-3) earned the win in relief Sunday against Colorado after tossing a scoreless inning, allowing one hit and a walk.
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Earns second save of season
PArizona Diamondbacks
September 23, 2021
Wendelken earned a save in Thursday's victory against Atlanta, tossing a perfect ninth inning with zero strikeouts to lock down a 6-4 lead.
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