Edwin Diaz
Edwin Diaz
24-Year-Old PitcherRP
Seattle Mariners
2018 Fantasy Outlook
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. Read Past Outlooks
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Grabs 57th save
PSeattle Mariners
September 29, 2018
Diaz worked out of a bases-loaded jam and struck out three in a scoreless inning to record the save Saturday against the Rangers.
Diaz allowed just one hit, but he also hit a batter and put another one on due to an error. He struck out Jurickson Profar with the bases loaded to get his 57th save, tied for the second-highest single-season total in the modern era. He's also posted a 1.96 ERA and 0.79 ERA with 124 strikeouts across 73.1 innings.
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Pitching Stats
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Left/Right Pitching Splits
Since 2016
BAA Batters K BB H 2B 3B HR
Since 2016vs Left .172 339 151 39 51 8 1 8
Since 2016vs Right .198 436 150 25 79 9 0 12
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
2016vs Left .195 91 39 9 16 5 0 2
2016vs Right .248 126 49 6 29 2 0 3
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Home/Away Pitching Splits
Since 2016
ERA on Road
ERA on Road
ERA on Road
ERA at Home
Since 2016Home 3.51 1.11 97.1 4 9 49 13.8 3.2 1.2
Since 2016Away 1.73 0.92 93.2 0 5 60 14.6 2.8 0.7
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
2016Home 2.63 0.99 27.1 0 1 10 16.1 2.3 0.7
2016Away 2.96 1.36 24.1 0 3 8 14.4 3.0 1.1
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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.
97.3 mph
Strand %
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Past Fantasy Outlooks
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
Seals 56th save
PSeattle Mariners
September 17, 2018
Diaz picked up his 56th save of the season in Monday's win over the Astros. He needed just five pitches to complete a perfect ninth inning.
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Grabs 55th save
PSeattle Mariners
September 15, 2018
Diaz allowed a solo home run and struck out a better to earn the save Saturday against the Angels.
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Allows run, takes loss
PSeattle Mariners
September 12, 2018
Diaz (0-4) was tagged with the loss Tuesday, allowing one run on three hits while striking out one in an inning of work against the Padres.
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Earns 54th save
PSeattle Mariners
September 9, 2018
Diaz struck out one batter and hit another in a scoreless ninth inning to earn the save in Sunday's 3-2 win over the Yankees.
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Locks down save No. 53
PSeattle Mariners
September 6, 2018
Diaz pitched a perfect ninth inning with two strikeouts Wednesday to earn the save against the Orioles.
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