J.B. Wendelken
27-Year-Old PitcherRP
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. Read Past Outlooks
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To be relied upon heavily again
POakland Athletics
February 23, 2021
Wendelken, who posted a 1.80 ERA and career-best 29.2 percent strikeout rate across 21 appearances last season, will be relied upon frequently again in 2021, Matt Kawahara of the San Francisco Chronicle reports.
ANALYSIS
The right-hander logged the second-most innings in the Athletics bullpen behind former closer Liam Hendriks in 2020, and he led all Oakland relievers in batters faced while holding them to a minuscule .546 OPS. Wendelken also stranded 16 of the MLB-high 24 inherited runners he faced with the help of a slider that he deployed more frequently than ever and against which hitters managed just a .115 slugging percentage. "Going into this year, we have that much more faith in him, and he makes our bullpen a lot better when you bring in the type of guys we have here recently and still have a guy like J.B. that can kind of pitch those middle innings -- if someone's in the setup role, he can do that," manager Bob Melvin said. "He's got postseason experience now. He's a bona fide big leaguer now."
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Pitching Stats
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2020
2019
2018
2020 MLB Game Log
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2019 MLB Game Log
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2018 MLB Game Log
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Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
21
Last 10 Games
20
Last 5 Games
24
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 2018
 
 
-17%
BAA vs LHP
2020
 
 
-10%
BAA vs RHP
2019
 
 
-15%
BAA vs LHP
2018
 
 
-57%
BAA vs LHP
BAA Batters K BB H 2B 3B HR
Since 2018vs Left .153 127 29 15 17 4 0 2
Since 2018vs Right .184 173 51 10 29 7 1 3
2020vs Left .194 43 12 7 7 2 0 1
2020vs Right .175 63 19 4 10 1 0 1
2019vs Left .160 57 10 6 8 1 0 1
2019vs Right .188 75 25 3 13 5 1 1
2018vs Left .080 27 7 2 2 1 0 0
2018vs Right .188 35 7 3 6 1 0 1
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2018
 
 
-65%
ERA at Home
2020
 
 
-50%
ERA at Home
2019
 
 
-67%
ERA at Home
2018
 
 
-100%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2018Home 1.21 0.86 37.1 2 1 0 8.4 2.2 0.5
Since 2018Away 3.41 1.05 37.0 2 1 0 10.7 3.9 0.7
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
2019Home 1.72 0.70 15.2 1 0 0 8.6 1.7 0.6
2019Away 5.29 1.12 17.0 2 1 0 10.1 3.2 0.5
2018Home 0.00 0.82 7.1 0 0 0 6.1 2.5 0.0
2018Away 0.96 0.75 9.1 0 0 0 8.7 2.9 1.0
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
2.82
 
K/9
11.2
 
BB/9
4.0
 
HR/9
0.7
 
Fastball
94.5 mph
 
ERA
1.80
 
WHIP
1.12
 
BABIP
.275
 
GB/FB
1.32
 
Left On Base
79.4%
 
Exit Velocity
78.5 mph
 
Barrels/BBE
3.4%
 
Spin Rate
2396 rpm
 
Balls Hit 95+ MPH
20.2%
 
Swinging Strike
11.2%
 
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Defensive Stats
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Stats Vs Today's Lineup
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More Fantasy News
Returns from injured list
POakland Athletics
September 29, 2020
Wendelken was activated from the injured list Tuesday and will be a part of Oakland's wild-card roster, Martin Gallegos of MLB.com reports.
ANALYSIS
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Likely to join postseason roster
POakland Athletics
Undisclosed
September 28, 2020
The Athletics are expected to activate Wendelken (undisclosed) from the 10-day injured list ahead of Tuesday's postseason opener versus the White Sox, Susan Slusser of the San Francisco Chronicle reports.
ANALYSIS
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Lands on injured list
POakland Athletics
September 24, 2020
Wendelken (undisclosed) was placed on the injured list Thursday.
ANALYSIS
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Strikes out side in loss
POakland Athletics
September 14, 2020
Wendelken struck out the side in a perfect eighth inning during a loss to the Rangers on Sunday.
ANALYSIS
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Takes loss in Game 2
POakland Athletics
September 9, 2020
Wendelken (1-1) allowed an unearned run on a hit and a walk while striking out two over two innings in a loss to the Astros in Game 2 of Tuesday's doubleheader.
ANALYSIS
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