Isan Diaz
Isan Diaz
24-Year-Old Second Baseman2B
Miami Marlins
Out
Injury Opt Out
Est. Return 2/1/2021
2020 Fantasy Outlook
One of Miami's most prominent callups in 2019, Diaz moved to the majors in August after posting a .973 OPS in 102 games at Triple-A. While Miami stuck with him as its primary second baseman, Diaz's initial returns weren't promising. A 29.4 K% was the biggest hindrance to his success, with off-speed (45.3 Whiff%) and breaking pitches (40.6 Whiff%) in particular vexing the 23-year-old. Improvement in that area will be essential for Diaz to keep his average above the Mendoza Line moving forward, as his Statcast-measured hard-hit (32.2%) and barrel rates (4.5%) weren't special enough to override the swing and miss in his game. Since Diaz likely won't chip in more than a few steals in peak years either, his fantasy profile is one-dimensional at this stage. Furthermore, Diaz's playing time became less secure over the winter, when the Marlins acquired another established option at the keystone in Jonathan Villar. Read Past Outlooks
RANKSFrom Preseason
#529
ADP
Add To Watchlist
$Signed a one-year contract with the Marlins in March of 2019.
Moves to restricted list
2BMiami Marlins
Opt Out
August 4, 2020
The Marlins placed Diaz on the restricted list Friday.
ANALYSIS
Miami made the roster move after Diaz informed the club of his plans to opt out of the 2020 season due to concerns about the coronavirus pandemic. His placement on the restricted list cleared a spot on the 40-man roster and in the Marlins' 60-man roster pool.
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Batting Stats
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2020
2019
2020 MLB Game Log
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Scoring
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2019 MLB Game Log
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Batting Order Slot Breakdown
vs Right-Handed Pitchers
vs RHP
#1
#2
#3
#4
#5
#6
#7
#8
#9
2
vs Left-Handed Pitchers
vs LHP
#1
#2
#3
#4
#5
#6
#7
#8
#9
Left/Right Batting Splits
Since 2018
 
 
+33%
OPS vs RHP
2020
 
 
+700%
OPS vs LHP
2019
 
 
+50%
OPS vs RHP
2018
No Stats
OPS PA R HR RBI SB AVG OBP SLG
Since 2018vs Left .444 45 4 1 4 0 .122 .200 .244
Since 2018vs Right .592 165 15 4 19 0 .190 .273 .320
2020vs Left 2.000 1 1 0 0 0 1.000 1.000 1.000
2020vs Right .250 8 1 0 0 0 .125 .125 .125
2019vs Left .407 44 3 1 4 0 .100 .182 .225
2019vs Right .611 157 14 4 19 0 .194 .280 .331
2018vs Left 0 0 0 0 0 0 0 0 0
2018vs Right 0 0 0 0 0 0 0 0 0
More Splits View More Split Stats
Home/Away Batting Splits
Since 2018
 
 
+63%
OPS at Home
2020
 
 
-100%
OPS on Road
2019
 
 
+63%
OPS at Home
2018
No Stats
OPS PA R HR RBI SB AVG OBP SLG
Since 2018Home .715 94 10 2 12 0 .225 .340 .375
Since 2018Away .440 116 9 3 11 0 .139 .190 .250
2020Home 0 0 0 0 0 0 0 0 0
2020Away .444 9 2 0 0 0 .222 .222 .222
2019Home .715 94 10 2 12 0 .225 .340 .375
2019Away .439 107 7 3 11 0 .131 .187 .253
2018Home 0 0 0 0 0 0 0 0 0
2018Away 0 0 0 0 0 0 0 0 0
More Splits View More Split Stats
Stat Review
How does Isan Diaz compare to other hitters?
This section compares his stats with all batting seasons from the previous three seasons (minimum 400 plate appearances)*. 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 and Barrels/PA % are benchmarked against 2019 data (min 400 PA) and Hard Hit Rate is benchmarked against last season's data (min 400 PA). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
  • BB/K
    Walk to strikeout ratio
  • BB Rate
    The percentage of plate appearances resulting in a walk.
  • K Rate
    The percentage of plate appearances resulting in a strikeout.
  • BABIP
    Batting average on balls in play. Measures how many of a batter’s balls in play go for hits.
  • ISO
    Isolated Power. Slugging percentage minus batting average. A computation used to measure a batter's raw power.
  • AVG
    Batting average. Hits divided by at bats.
  • OBP
    On Base Percentage. A measure of how often a batters reaches base. Roughly equal to number of times on base divided by plate appearances.
  • SLG
    Slugging Percentage. A measure of the batting productivity of a hitter. It is calculated as total bases divided by at bats.
  • OPS
    On base plus slugging. THe sum of a batter's on-base percentage and slugging percentage.
  • wOBA
    Weighted on-base average. Measures a player's overall offensive contributions per plate appearance. wOBA combines all the different aspects of hitting into one metric, weighting each of them in proportion to their actual run value.
  • Exit Velocity
    The speed of the baseball as it comes off the bat, immediately after a batter makes contact.
  • Hard Hit Rate
    A measure of contact quality from Sports Info Solutions. This stat explains what percentage of batted balls were hit hard vs. medium or soft.
  • Barrels/PA
    The percentage of plate appearances where a batter had a batted ball classified as 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.
BB/K
0.00
 
BB Rate
0.0%
 
K Rate
33.3%
 
BABIP
.333
 
ISO
.000
 
AVG
.222
 
OBP
.222
 
SLG
.222
 
OPS
.444
 
wOBA
.198
 
Exit Velocity
87.4 mph
 
Hard Hit Rate
50.0%
 
Barrels/PA
0.0%
 
Advanced Batting Stats
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Additional Stats
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Defensive Stats
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Batted Ball Stats
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Stats Vs Upcoming Pitchers
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Recent RotoWire Articles Featuring Isan Diaz
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126 days ago
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295 days ago
Clay Link looks at appearances by position and makes note of multi-position eligibility and lost eligibility for 2020.
The Z Files: It's Better To Be Lucky and Good
307 days ago
Todd Zola looks back on his TGFBI-winning roster and notes there was more than luck involved in him drafting breakout players like Cody Bellinger.
Past Fantasy Outlooks
2019
2018
2017
2016
Diaz was traded to the Marlins before the 2018 season in the deal that sent Christian Yelich to the Brewers. He opened the season with Double-A Jacksonville, hitting .245/.365/.418 with 10 homers and 10 stolen bases across 83 games with the Jumbo Shrimp before receiving a promotion to Triple-A New Orleans in mid-July. The 22-year-old struggled in his first taste of Triple-A, slashing just .204/.281/.358 in 36 games. Strikeouts remain an issue for Diaz, as he's fanned in at least 25% of his plate appearances in three straight seasons, but he has a knack for getting on base (.353 career OBP) and offers a modest power/speed combo for a middle infielder. He should open the season back with the Baby Cakes, though he could break camp with the Marlins if Starlin Castro is traded before Opening Day. Either way, a promotion to the majors at some point in 2019 seems likely for the youngster.
Diaz jumped onto top-100 prospect lists following a 2016 campaign in which he posted an .827 OPS as a 20-year-old shortstop and was named the Brewers' minor-league player of the year, but he took a step back in the standard fantasy categories last season in his first go-around with High-A Carolina. A closer look at his stats shows his BB:K ratio and contact rate held pretty firm, which explains the similarity in OBP. However, his OPS took a hit thanks to a sizable dropoff in BABIP and ISO. Given his decline and with his 2017 campaign cut short by a hand injury, Diaz could open 2018 back at the High-A level, but it will be for a new organization after he was traded to the Marlins in the deal that sent Christian Yelich to Milwaukee. However, Diaz has never never repeated a level, so he could earn an assignment to the Double-A ranks relatively early.
Diaz is the perfect example of the kind of player Brewers GM David Stearns has been targeting in his rebuilding efforts. He is far from the perfect prospect -- it's unclear if he'll be able to stick at shortstop, he's only 5-foot-10 and his hit tool is exceptionally raw. But the numbers he put up in short-season ball in 2015 were impeccable - .360/.436/.640 with 13 home runs in just 68 games as a 19-year-old. Diaz was elevated to full-season ball in the Midwest League with the Brewers and continued to rake, as he posted a .264/.358/.469 line in a much more pitcher-friendly league in 2016. His 25.3 percent strikeout rate is concerning, but as a prospect who already has shown solid power and discipline and can play a premium defensive position, there's a lot to dream on with Diaz.
At just 19 years old, Diaz tore up the rookie-level Pioneer League in 2015. He played in 68 games and posted a 1.076 OPS over 312 plate appearances. Diaz also blasted 13 home runs and swiped 12 bases, showing a good combination of power and speed. The youngster improved his strikeout rate as well, from 26.4% in 2014 to 20.8% last year. Continued improvements in this area will only bolster his offensive potential. In the field, Diaz started 63 of his 68 games last year at shortstop, posting a .945 fielding percentage. His other five starts came at second base. If Diaz continues to hit enough to allow his power and speed to play, he will shoot up prospect lists. An offseason trade to Milwaukee put him on the map, so he should no longer be under the radar in dynasty leagues.
More Fantasy News
Opts out of 2020 season
2BMiami Marlins
Opt Out
August 1, 2020
Diaz opted out of the 2020 season Saturday, Jon Heyman of MLB Network reports.
ANALYSIS
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Considering opting out
2BMiami Marlins
July 31, 2020
Diaz is considering opting out of the season, Jon Heyman of MLB Network reports.
ANALYSIS
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Not in Saturday's lineup
2BMiami Marlins
July 25, 2020
Diaz will be on the bench Saturday against the Phillies, Jordan McPherson of the Miami Herald reports.
ANALYSIS
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Spring struggles continue
2BMiami Marlins
March 12, 2020
Diaz went 0-for-3 with a strikeout in Wednesday's Grapefruit League game against the Yankees.
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On bench Monday
2BMiami Marlins
September 16, 2019
Diaz is not in the lineup Monday against the Diamondbacks, Joe Frisaro of MLB.com reports.
ANALYSIS
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