Williams Jerez
Williams Jerez
27-Year-Old PitcherRP
Pittsburgh Pirates
2019 Fantasy Outlook
There was no outlook written for Williams Jerez in 2019. Check out the latest news below for more on his current fantasy value.
$Traded to the Giants in March of 2019.
Claimed by Pittsburgh
PPittsburgh Pirates
September 13, 2019
Jerez was claimed off waivers by the Pirates on Friday, Adam Berry of MLB.com reports.
ANALYSIS
Jerez was designated for assignment by the Pirates earlier this week and will make his way to Pittsburgh. The 27-year-old allowed two runs on seven hits over 6.2 major-league innings this season, but he did struggle with six walks. He fared well at Triple-A Sacramento, recording a 3.86 ERA and 1.11 WHIP across 56 innings.
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Pitching Stats
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Pitching Appearances Breakdown
Average Pitch Count
16
Last 10 Games
14
Last 5 Games
12
How many pitches does Williams Jerez 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 Williams Jerez 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
 
 
-24%
BAA vs RHP
2019
 
 
-30%
BAA vs RHP
2018
 
 
-18%
BAA vs RHP
2017
No Stats
BAA Batters K BB H 2B 3B HR
Since 2017vs Left .333 46 7 7 13 2 0 3
Since 2017vs Right .254 73 17 10 16 3 1 2
2019vs Left .375 19 1 3 6 1 0 1
2019vs Right .261 29 8 6 6 1 1 1
2018vs Left .304 27 6 4 7 1 0 2
2018vs Right .250 44 9 4 10 2 0 1
2017vs Left 0 0 0 0 0 0 0 0
2017vs Right 0 0 0 0 0 0 0 0
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2017
 
 
-34%
ERA on Road
2019
 
 
-4%
ERA at Home
2018
 
 
-50%
ERA on Road
2017
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2017Home 5.89 1.91 18.1 1 0 0 8.3 5.9 2.0
Since 2017Away 3.86 1.57 7.0 0 0 0 9.0 6.4 1.3
2019Home 4.32 1.92 8.1 1 0 0 8.6 6.5 2.2
2019Away 4.50 2.50 2.0 0 0 0 4.5 13.5 0.0
2018Home 7.20 1.90 10.0 0 0 0 8.1 5.4 1.8
2018Away 3.60 1.20 5.0 0 0 0 10.8 3.6 1.8
2017Home 0 0 0 0 0 0 0 0 0
2017Away 0 0 0 0 0 0 0 0 0
More Splits View More Split Stats
Stat Review
How does Williams Jerez 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
1.00
 
K/9
7.8
 
BB/9
7.8
 
HR/9
1.7
 
Fastball
94.1 mph
 
ERA
4.35
 
WHIP
2.03
 
BABIP
.332
 
GB/FB
2.00
 
Left On Base
87.9%
 
Exit Velocity
90.9 mph
 
Barrels/BBE
13.3%
 
Spin Rate
1971 rpm
 
Balls Hit 95+ MPH
53.3%
 
Swinging Strike
7.8%
 
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 Williams Jerez
MLB Barometer: Trade Deadline Review
August 1, 2018
Derek VanRiper takes a deep dive into the fallout from this year's trade deadline, breaking down each transaction with an eye toward the rest of the season.
Past Fantasy Outlooks
2017
2016
2013
2012
Jerez impressed enough in 2015 -- his first full year of pitching after flaming out as a hitter -- to earn a spot on Boston's 40-man roster. He flashed potential in the lower levels of the minors and the organization was eager for him to gain more experience as a reliever at Double-A Portland in 2016. There was some thought that he could eventually move up to Triple-A Pawtucket, where he would be on the precipice of MLB, but he didn't develop as hoped. The 24-year-old left-hander maintained an ability to miss bats (9.0 K/9), but his command wavered (30 walks in 65 innings). He was outrighted off the 40-man roster this offseason and should simply serve as organizational depth going forward.
Jerez, a converted outfielder, earned himself placement on the 40-man roster after he turned in a successful season in 2015, his first full year as a reliever. He thrived at the lower levels (Low-A Greenville, High-A Salem) before getting into 22 games (37 innings) at Double-A Portland. His fastball sits in the low-to-mid 90s with some sink. The command will come and go, but he's essentially around the zone. His best secondary offering is a slider while the changeup lags behind that. He'll start 2016 at Portland to gain more confidence and experience. If all goes well, he'll get the call up to Triple-A Pawtucket where he'll be an injury away from Boston.
Jerez, a second-round pick out high school in the 2011 draft, suffered a hand injury in 2012 that ate into his development time. At present, he's a center-fielder with good instincts defensively, but his 6-4 frame could fill out in the coming years. The reduced playing time in 2012 hurt him offensively, where Jerez is below average in terms of pitch recognition and plate approach. If he's placed at Low-A Greenville, there may be some struggles initially. He'll be challenged as a hitter, but it will be a chance for him to adjust to better competition.
The Red Sox feel Jerez has five-tool potential, but at 19, he's very raw and needs to polish his skills. Things have come easy for Jerez, but he'll be dealing with an advanced level of competition and he needs to work on his swing and ability to hit secondary offerings. Jerez will start his career with Boston in center field, but he there's potential for his body to grow and he may find a home at a corner outfield spot. The Red Sox feel his defense is good enough to translate from center. If he can develop his swing in spring training, he could open the year at Low-A Greenville. Otherwise, he'll hang back in extended spring training and head to Short-Season Lowell in June.
More Fantasy News
Removed from 40-man roster
PSan Francisco Giants
September 10, 2019
Jerez was designated for assignment by the Giants on Tuesday.
ANALYSIS
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Sent back to minors
PSan Francisco Giants
August 15, 2019
Jerez was optioned to Triple-A Sacramento on Thursday, Maria I. Guardado of MLB.com reports.
ANALYSIS
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Joining major-league club
PSan Francisco Giants
August 6, 2019
Jerez was recalled from Triple-A Sacramento on Tuesday.
ANALYSIS
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Heads to Triple-A
PSan Francisco Giants
July 19, 2019
Jerez was optioned to Triple-A Sacramento on Friday, Kerry Crowley of The San Jose Mercury News reports.
ANALYSIS
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Earns first win
PSan Francisco Giants
July 19, 2019
Jerez (1-0) picked up the win Thursday after holding the Mets to one run on two hits and two walks with a pair of strikeouts over two innings in relief.
ANALYSIS
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