Isan Diaz
Isan Diaz
23-Year-Old Second Baseman2B
Miami Marlins
2019 Fantasy Outlook
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. Read Past Outlooks
RANKSFrom Preseason
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$Signed in June of 2014 after being selected in the first-year player draft.
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
Diaz has been a near-everyday starter at second base since getting making his big-league debut in early August, though he hasn't exactly earned such a role. He's hit just .153/.248/.260 in 37 games. Starlin Castro slides to second base in his absence, with Jon Berti starting at third.
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Batting Stats
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Batting Order Slot Breakdown
vs Right-Handed Pitchers
vs RHP
#1
#2
#3
#4
#5
#6
#7
#8
#9
2
13
1
4
8
vs Left-Handed Pitchers
vs LHP
#1
#2
#3
#4
#5
#6
#7
#8
#9
3
2
2
Left/Right Batting Splits
Since 2017
 
 
+14%
OPS vs RHP
2019
 
 
+14%
OPS vs RHP
2018
No Stats
2017
No Stats
OPS PA R HR RBI SB AVG OBP SLG
Since 2017vs Left .458 35 3 1 4 0 .097 .200 .258
Since 2017vs Right .523 114 9 2 12 0 .170 .263 .260
2019vs Left .458 35 3 1 4 0 .097 .200 .258
2019vs Right .523 114 9 2 12 0 .170 .263 .260
2018vs Left 0 0 0 0 0 0 0 0 0
2018vs Right 0 0 0 0 0 0 0 0 0
2017vs Left 0 0 0 0 0 0 0 0 0
2017vs Right 0 0 0 0 0 0 0 0 0
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Home/Away Batting Splits
Since 2017
 
 
+201%
OPS at Home
2019
 
 
+201%
OPS at Home
2018
No Stats
2017
No Stats
OPS PA R HR RBI SB AVG OBP SLG
Since 2017Home .737 81 9 2 11 0 .232 .346 .391
Since 2017Away .245 68 3 1 5 0 .065 .132 .113
2019Home .737 81 9 2 11 0 .232 .346 .391
2019Away .245 68 3 1 5 0 .065 .132 .113
2018Home 0 0 0 0 0 0 0 0 0
2018Away 0 0 0 0 0 0 0 0 0
2017Home 0 0 0 0 0 0 0 0 0
2017Away 0 0 0 0 0 0 0 0 0
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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 this season's data (min 200 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
0.37
 
BB Rate
10.7%
 
K Rate
28.9%
 
BABIP
.198
 
ISO
.107
 
AVG
.153
 
OBP
.248
 
SLG
.260
 
OPS
.508
 
wOBA
.235
 
Exit Velocity
88.7 mph
 
Hard Hit Rate
39.3%
 
Barrels/PA
2.8%
 
Advanced Batting Stats
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Additional Stats
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Defensive Stats
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Stats Vs Upcoming Pitchers
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Recent RotoWire Articles Featuring Isan Diaz
FanDuel MLB: Friday Breakdown
31 days ago
Adam Zdroik recommends a Rays stack -- featuring Tommy Pham -- against Daniel Norris and the Tigers on Friday.
NL FAAB Factor: Waiver Pickups of the Week
36 days ago
Jan Levine and Paul Martinez join forces to provide the latest and greatest pickup candidates, including a Braves' starter possibly returning to his earlier strong form.
Regan's Rumblings: Value Trending Up
41 days ago
Dave Regan points out 10 players across the league whom we can expect to have increased fantasy value for the rest of the season, like Texas’ Willie Calhoun.
NL FAAB Factor: Waiver Pickups of the Week
50 days ago
If Ian Happ can continue his impressive Triple-A numbers with the Cubs, Jan Levine figures he'll also be a solid addition to your team.
Minor League Barometer: Risers & Fallers
55 days ago
Jesse Siegel urges not to base a player's draft position or early minor-league performance for future success, while providing his latest notable prospects at various levels.
Past Fantasy Outlooks
2018
2017
2016
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
Clubs two-run homer
2BMiami Marlins
September 11, 2019
Diaz went 1-for-3 with a two-run home run and a walk in Wednesday's loss to Milwaukee.
ANALYSIS
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Resting Saturday
2BMiami Marlins
September 7, 2019
Diaz is not in the lineup Saturday against the Royals, Andre Fernandez of The Athletic reports.
ANALYSIS
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Sitting in second straight
2BMiami Marlins
September 1, 2019
Diaz is out of the lineup for Sunday's game against the Nationals, Andre Fernandez of The Athletic reports.
ANALYSIS
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Heads to bench
2BMiami Marlins
August 31, 2019
Diaz is not in the lineup for Saturday's game against the Nationals, Andre Fernandez of The Athletic reports.
ANALYSIS
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Knocks in two
2BMiami Marlins
August 27, 2019
Diaz went 1-for-3 with a double, a walk and two RBI on Tuesday against the Reds.
ANALYSIS
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