Edwin Diaz
Edwin Diaz
25-Year-Old PitcherRP
New York Mets
2019 Fantasy Outlook
Diaz ended 2018 as the top closer and looks to be one of the first off the board in 2019 after an offseason trade to the Mets. Here's the thing: amassing another 61 save chances with 57 conversions is a long shot. Last year, Diaz tied for the second-most saves in history. Even with comparable skills, 15-20 fewer is a fair expectation. Speaking of skills, they're elite. His 18.9 SwStr% was bested by only Josh Hader, and just barely at that. His K-BB% was tops in the league. Diaz throws a 98-mph fastball almost two-thirds of the time, complemented by a 90-mph slider. There's really nothing to point to in terms of luck as Diaz's BABIP, HR/FB and LOB% were all within expected ranges. The skills, hence strikeouts and ratios, are real and repeatable and thus worthy of chasing aggressively. Just don't count on another 50-save season. Read Past Outlooks
RANKSFrom Preseason
#51
ADP
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$Signed a one-year, $570,800 contract with the Mariners in March of 2018. Traded to the Mets in December of 2018.
Records 26th save
PNew York Mets
September 28, 2019
Diaz earned the save Saturday against the Braves by recording two strikeouts and not allowing a baserunner during the ninth inning.
ANALYSIS
Diaz had a stretch of 15 appearances without a save as Seth Lugo took over as the primary closer -- though he blew two save chances in that stretch -- but Diaz perhaps ended the season on a positive note after needing only 10 pitches Saturday. The 25-year-old has pitched two of the past three days and may have made his last outing of the season. Diaz's first season in New York has not gone according to plan with a 5.59 ERA and 1.38 WHIP while he's converted 26 of 33 save opportunities.
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Pitching Appearances Breakdown
Average Pitch Count
16
Last 10 Games
11
Last 5 Games
11
How many pitches does Edwin Diaz 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 Edwin Diaz 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
 
 
-21%
BAA vs LHP
2019
 
 
-35%
BAA vs LHP
2018
 
 
-16%
BAA vs LHP
2017
 
 
-1%
BAA vs RHP
BAA Batters K BB H 2B 3B HR
Since 2017vs Left .172 350 157 43 52 6 1 11
Since 2017vs Right .217 462 155 28 91 14 0 19
2019vs Left .193 102 45 13 17 3 0 5
2019vs Right .299 152 54 9 41 7 0 10
2018vs Left .144 126 68 12 16 1 1 1
2018vs Right .171 154 56 5 25 3 0 4
2017vs Left .184 122 44 18 19 2 0 5
2017vs Right .182 156 45 14 25 4 0 5
More Splits View More Split Stats
Home/Away Pitching Splits
Since 2017
 
 
-42%
ERA on Road
2019
 
 
-5%
ERA at Home
2018
 
 
-44%
ERA on Road
2017
 
 
-78%
ERA on Road
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2017Home 4.35 1.17 101.1 6 12 53 13.5 3.1 1.7
Since 2017Away 2.53 0.99 96.0 0 5 64 15.0 3.4 1.0
2019Home 5.46 1.21 31.1 2 4 14 14.9 2.0 2.3
2019Away 5.74 1.58 26.2 0 3 12 15.9 5.1 2.4
2018Home 2.45 0.79 40.1 0 4 30 14.5 2.2 0.7
2018Away 1.36 0.79 33.0 0 0 27 16.1 1.9 0.5
2017Home 5.76 1.65 29.2 4 4 9 10.6 5.5 2.4
2017Away 1.24 0.74 36.1 0 2 25 13.4 3.5 0.5
More Splits View More Split Stats
Stat Review
How does Edwin Diaz 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
4.50
 
K/9
15.4
 
BB/9
3.4
 
HR/9
2.3
 
Fastball
97.5 mph
 
ERA
5.59
 
WHIP
1.38
 
BABIP
.400
 
GB/FB
1.02
 
Left On Base
74.6%
 
Exit Velocity
90.3 mph
 
Barrels/BBE
10.9%
 
Spin Rate
2376 rpm
 
Balls Hit 95+ MPH
45.4%
 
Swinging Strike
18.3%
 
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Defensive Stats
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Recent RotoWire Articles Featuring Edwin Diaz
MLB Barometer: Risers & Fallers
21 days ago
Erik Halterman looks at the season's biggest risers and fallers in his farewell column. Few players outperformed their ADP as much as Kansas City's Jorge Soler this year.
Mound Musings: Targeting 2020 – Building Your Draft Day Value List
47 days ago
Brad Johnson looks at players who likely will offer considerable value on draft day 2020, including Dodger Julio Urias, who could be in the rotation full-time next year.
Minor League Barometer: Risers & Fallers
53 days ago
Jesse Siegel concludes his season outlook by presenting his top performers and disappointments.
The Z Files: Second-Half Bullpen and Basepath Observations
53 days ago
Todd Zola digs into recent stolen base and bullpen numbers looking for an edge and notes that Trea Turner isn't the only National who's been tearing up the basepaths lately.
Regan's Rumblings: Keeper Value Trending Up
63 days ago
Dave Regan discusses which MLB veterans have increased their keeper value the most this year, including Arizona’s Ketel Marte, who’s hitting a .320/.381/.568 with 25 home runs and eight steals.
Past Fantasy Outlooks
2018
2017
2016
2015
The road was a bit rocky for Diaz in 2017, with the Mariners temporarily relieving him of closer duties on a couple occasions, but when it was all said and done Diaz tied for fourth in the American League in saves. He converted 21 of 23 save opportunities in the second half and struck out 32 percent of the batters he faced overall using a combination of high-90s fastballs and high-80s sliders. Diaz can be his own worst enemy with the walks, and the uptick in home runs last season is a concern, although he was better in that regard down the stretch (two homers allowed in his final 30.1 innings). His stuff is electric most of the time and there aren't any proven options behind him in the Seattle bullpen, so Diaz should be given every chance to remain in the closer role throughout 2018. However, he's not exactly a "safe" investment given the slip in performance from 2016 and the general year-to-year unpredictability of major-league relievers.
Seattle's save chances were dominated in the first half by Steve Cishek. However, after Cishek landed on the disabled list, Diaz, once a top starting pitching prospect, took the reins and never looked back. He dazzled in the bullpen over the final two-plus months, going 18-for-21 in save chances. Diaz ranked sixth in second-half K/9 (14.3) among arms with 20-plus appearances, behind Ken Giles, Kenley Jansen, Dellin Betances, Craig Kimbrel and Aroldis Chapman. On the season, he finished fourth among relievers with an 18.5 swinging-strike percentage. While his his walk rate was a sparkling 2.6 BB/9, he has bouts of inefficiency and must aim to get ahead in more at-bats. Still, the right-hander, who turns 23 in March, boasts outstanding peripherals (33.6 K-BB%) and electric stuff. Even with some correction perhaps coming, Diaz could deliver numbers befitting a top-five fantasy closer at a discount relative to bigger names.
It is a sad state of affairs when a pitcher who finished the previous season with a 4.57 ERA in 104.1 innings at Double-A has a claim as the best prospect in a farm system, but that is where the Mariners are at. Diaz is not nearly as bad as that ERA suggests — he had a 1.70 ERA in 37 innings at High-A Bakersfield before his promotion and his 3.22 FIP at Double-A Jackson suggests he was pretty unlucky in Southern League play. His 145:46 K:BB in 141.1 innings illustrates his potential to be an average or better bat misser with an average command profile in the big leagues, essentially serving as a true No. 3 starter who should benefit from playing half his games in Safeco Field. Diaz should spend most, if not all of his age-22 season at Triple-A Tacoma, potentially getting some late-season spot starts with the Mariners, but more likely figuring into the rotation plans in 2017.
A third-round pick out of Puerto Rico in the 2012 draft, Diaz held his own at Low-A Clinton last year as a 20-year-old after dominating in rookie ball in 2013. He has a low-to-mid-90s fastball, a good slider, and a developing changeup. His control needs some work, but he has plenty of time to hone those skills. He will also continue to fill out. His 6-foot-2, 178-pound frame is about 20 pounds more than his draft weight, but he's bound to get bigger and stronger still. The organization's co-starting pitcher of the year in 2014 (along with Jordan Pries), Diaz is a ways away, but he has plenty of upside and is worth keeping an eye on.
More Fantasy News
Blows save in meltdown
PNew York Mets
September 3, 2019
Diaz (1-7) allowed two earned runs on two hits without recording an out to blow the save and take the loss Tuesday against the Nationals.
ANALYSIS
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Good to go Wednesday
PNew York Mets
August 28, 2019
Diaz (neck) is available out of the bullpen Wednesday against the Cubs, Anthony DiComo of MLB.com reports.
ANALYSIS
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May be available Tuesday
PNew York Mets
Neck
August 27, 2019
Diaz (neck) will throw off a mound prior to Tuesday's game to determine his availability against the Cubs, Mike Puma of the New York Post reports.
ANALYSIS
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Improving but unavailable Sunday
PNew York Mets
Neck
August 25, 2019
Diaz (neck) feels better but won't pitch in Sunday's game against the Braves, Mike Puma of the New York Post reports.
ANALYSIS
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Dealing with trap tightness
PNew York Mets
Shoulder
August 24, 2019
Diaz was removed from Saturday's game against the Braves with right trap tightness, Anthony DiComo of MLB.com reports.
ANALYSIS
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