Junior Guerra
Junior Guerra
34-Year-Old PitcherRP
Arizona Diamondbacks
2019 Fantasy Outlook
In 2018, Guerra set personal bests with 31 appearances, 26 starts and 141 innings. His 2019 role is still unclear, though he's likely to fill a similar swingman role with the lean to more work from the bullpen than last season. The totals would have been higher if not for a 10-day DL stint in July. The 34-year-old righty also set a career high with a 22.3 K%, fueled by adding a couple ticks of velocity across his fastball/splitter/sinker/slider mix. The past two seasons, Guerra has allowed an excess of baserunners, but for different reasons. In 2017, his .236 BABIP was mitigated by a 13.6 BB%, but last season, an unlucky .312 BABIP spoiled an improved 9.0 BB%. If Guerra can maintain the control gains while enjoying a hit rate correction, he could improve on last season's 4.90 ERA. It's not a chance to chase, but it does put Guerra on the radar in deeper formats, especially for the stretches he's in the Brewers' rotation. Read Past Outlooks
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$Signed a one-year, $2.55 million contract with the Diamondbacks in December of 2019. Contract includes team option ($100,000 buyout) for 2021.
Bound for desert
PArizona Diamondbacks
December 8, 2019
Guerra agreed Sunday with the Diamondbacks on a one-year contract that includes a club option for 2021, Ken Rosenthal of The Athletic reports.
ANALYSIS
Guerra has 60 games of MLB starting experience under his belt, but the Diamondbacks will presumably keep him in a bullpen role after he worked exclusively for Milwaukee in that capacity in 2019 and performed effectively. Despite posting a 3.55 ERA, 1.12 WHIP and 77:36 K:BB in 83.2 innings, Guerra was still non-tendered by Milwaukee earlier this month, but his deal with Arizona will likely keep him somewhere in the neighborhood of the $3.5 million he would have earned in arbitration. As Rosenthal notes, the Diamondbacks will still maintain control of Guerra for three seasons, even though the terms of his contract only pertain to 2020 and 2021.
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Pitching Appearances Breakdown
Average Pitch Count
19
Last 10 Games
16
Last 5 Games
15
How many pitches does Junior Guerra 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 Junior Guerra 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 2017
 
 
-1%
BAA vs RHP
2019
 
 
-14%
BAA vs LHP
2018
 
 
-3%
BAA vs RHP
2017
 
 
-4%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2017vs Left .238 613 127 79 125 25 2 22
Since 2017vs Right .236 656 153 55 137 28 1 26
2019vs Left .178 160 32 27 23 5 1 3
2019vs Right .206 184 45 9 35 7 0 8
2018vs Left .267 313 67 33 74 16 0 12
2018vs Right .260 298 69 22 69 17 1 7
2017vs Left .235 140 28 19 28 4 1 7
2017vs Right .226 174 39 24 33 4 0 11
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2017
 
 
-46%
ERA at Home
2019
 
 
-4%
ERA on Road
2018
 
 
-64%
ERA at Home
2017
 
 
-43%
ERA at Home
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2017Home 3.05 1.23 168.1 6 5 1 9.1 3.9 1.2
Since 2017Away 5.68 1.49 126.2 10 13 2 7.7 4.3 1.8
2019Home 3.63 1.03 39.2 3 1 1 9.1 3.6 0.9
2019Away 3.48 1.20 44.0 6 4 2 7.6 4.1 1.4
2018Home 2.48 1.22 90.2 3 3 0 8.9 3.3 1.1
2018Away 6.97 1.73 50.1 3 6 0 8.2 3.9 1.4
2017Home 3.79 1.45 38.0 0 1 0 9.7 5.7 1.9
2017Away 6.68 1.52 32.1 1 3 0 7.2 5.3 2.8
More Splits View More Split Stats
Stat Review
How does Junior Guerra 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
2.14
 
K/9
8.3
 
BB/9
3.9
 
HR/9
1.2
 
Fastball
94.7 mph
 
ERA
3.55
 
WHIP
1.12
 
BABIP
.228
 
GB/FB
1.24
 
Left On Base
75.1%
 
Exit Velocity
86.9 mph
 
Barrels/BBE
5.2%
 
Spin Rate
2203 rpm
 
Balls Hit 95+ MPH
30.0%
 
Swinging Strike
11.6%
 
Advanced Pitching Stats
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Defensive Stats
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Past Fantasy Outlooks
2018
2017
2016
Following a breakout rookie season as a 31-year-old in 2016, Guerra was tabbed as the Brewers' Opening Day starter to kick off the 2017 campaign. Things quickly went south from there, as he was injured while hitting and missed nearly two months of action. He held his own for a few starts after returning from the disabled list, but he had trouble finding the strike zone, was dropped from the rotation by the end of July and started just one more game for the Brewers very late in the year. Guerra's control and fastball velocity fell off significantly last season, but his success the year before will earn him a chance to secure a spot at the back end of the rotation during spring training. At age 32 without much of a track record, though, he is seemingly a long shot to come away with one of the five openings.
As a 31-year-old rookie, Guerra came out of nowhere to become Milwaukee's ace in 2016. Behind a fastball-slider-splitfinger combination, Guerra recorded a 2.81 ERA with exactly 100 strikeouts over 121.2 innings -- an innings limit imposed by the Brewers considering Guerra had spent most of his previous minor league campaigns in the bullpen. The big ticket for Guerra is the splitfinger, which drew whiffs nearly one in every five times he threw it and held opponents to just a .115 batting average against. Such success always feels precarious for a pitcher like Guerra, who was virtually unknown until his big 2016 season. But that splitter is for real, and while he may not be able to maintain a sub-3.00 ERA, Guerra's arsenal is good enough for him to remain a solid mid-rotation pitcher in 2017 and beyond.
After spending six seasons in independent leagues, Guerra got to pitch last year as a member of the White Sox organization. He moved through Double-A and Triple-A as a long reliever, and even got a taste of the major leagues in June. He got shelled in the majors, but his numbers in the minors were somewhat decent. His Triple-A ERA was only 3.39 and he reduced his WHIP to 1.16 while posting an excellent 11.3 K/9. He'll have to show that he can be effective against major league hitters, but he could see a shot in the big leagues with the Brewers bullpen being fairly young and fluid.
More Fantasy News
Non-tendered by Milwaukee
PFree Agent
December 2, 2019
Guerra was non-tendered by the Brewers on Monday.
ANALYSIS
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Picks up ninth win
PMilwaukee Brewers
September 11, 2019
Guerra picked up his ninth win of the season in Tuesday's victory over the Marlins.
ANALYSIS
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Scoops up one-out save
PMilwaukee Brewers
August 22, 2019
Guerra retired the lone hitter he faced in Wednesday's 5-3 rain-shortened win over the Cardinals to secure his third save of the season.
ANALYSIS
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Notches fifth win
PMilwaukee Brewers
August 8, 2019
Guerra (5-3) pitched two innings and picked up his fifth win of the season in Wednesday's victory over the Pirates.
ANALYSIS
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ERA climbing
PMilwaukee Brewers
July 14, 2019
Guerra allowed an earned run over 0.2 innings of relief in Saturday's victory over the Giants.
ANALYSIS
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