Yainer Diaz

26-Year-Old CatcherC

Houston Astros

2025 Stats

AVG

.143

RBI

Rest-of-Season Projections

AVG

RBI

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2025 Fantasy Outlook

Diaz took over as Houston's primary backstop in 2024 and hit 16 homers with a .299/.325/.441 slash line in 148 games, with 99 of those starts coming behind the plate. He was unable to recreate the 23 home runs and .846 OPS he posted in 2023, but the regression isn't a major surprise since he's now handling the most demanding defensive position after previously working as the secondary option. He was also much more productive in the second half of 2024 as he got more comfortable with the added defensive responsibilities. It wouldn't be surprising if Diaz cracks the 20-homer plateau in 2025, and there's plenty of potential for counting stats given Houston's strong lineup. He should again be a reliable fantasy catcher with enough upside to be one of the better producers at the position. Read Past Outlooks

RANKS

Rest of Season

Overall Rank

Dynasty

From Preseason

#57

ADP

League Majors

Bats R

Throws R

40 Man Yes

Height 6'0"

Weight 195

DOB 9/21/1998

Born Azua, DR

College None

Drafted 2016 CLE

Idle Saturday

CHouston Astros

March 29, 2025

Diaz is out of the lineup Saturday against the Mets, Brian McTaggart of MLB.com reports.

ANALYSIS
After going 1-for-7 with an RBI and two strikeouts through his first two games, Diaz will step aside Saturday while Victor Caratini starts behind the plate.

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Batting Stats

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2025

2024

2023

2022

2025 MLB Game Log

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2024 MLB Game Log

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2023 MLB Game Log

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2022 MLB Game Log

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Minor League Game Log

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Batting Order Slot Breakdown

vs Right-Handed Pitchers

vs RHP

vs Left-Handed Pitchers

vs LHP

Left/Right Batting Splits

Since 2023

+11%

OPS vs RHP

2025

-100%

OPS vs RHP

2024

+7%

OPS vs LHP

2023

+50%

OPS vs RHP

	OPS	PA	R	HR	RBI	SB	AVG	OBP	SLG
Since 2023vs Left	.735	273	35	9	34	1	.271	.304	.431
Since 2023vs Right	.814	731	86	30	111	1	.299	.323	.491
2025vs Left	0	0	0	0	0	0	0	0	0
2025vs Right	.393	8	0	0	1	0	.143	.250	.143
2024vs Left	.806	170	22	6	25	1	.306	.341	.465
2024vs Right	.751	449	48	10	59	1	.297	.318	.432
2023vs Left	.620	103	13	3	9	0	.214	.243	.378
2023vs Right	.931	274	38	20	51	0	.307	.332	.599
More Splits→	View More Split Stats

Home/Away Batting Splits

Since 2023

+31%

OPS at Home

2025

-100%

OPS at Home

2024

+29%

OPS at Home

2023

+37%

OPS at Home

	OPS	PA	R	HR	RBI	SB	AVG	OBP	SLG
Since 2023Home	.896	517	75	24	82	1	.331	.352	.544
Since 2023Away	.682	487	46	15	63	1	.249	.281	.401
2025Home	.393	8	0	0	1	0	.143	.250	.143
2025Away	0	0	0	0	0	0	0	0	0
2024Home	.860	314	45	10	46	1	.337	.357	.503
2024Away	.667	305	25	6	38	1	.260	.292	.375
2023Home	.972	195	30	14	35	0	.328	.349	.624
2023Away	.708	182	21	9	25	0	.231	.264	.444
More Splits→	View More Split Stats

Stat Review

How does Yainer 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.
Expected BA
Expected Batting Average.
Expected SLG
Expected Slugging Percentage.
Sprint Speed
The speed of a runner from home to first, in feet per second.
Ground Ball %
The percentage of balls put in play that are on the ground.
Line Drive %
The percentage of balls put in play that are line drives.
Fly Ball %
The percentage of balls put in play that are fly balls.

BB/K

0.50

BB Rate

12.5%

K Rate

25.0%

BABIP

.200

ISO

.000

AVG

.143

OBP

.250

SLG

.143

OPS

.393

wOBA

.198

Exit Velocity

98.6 mph

Hard Hit Rate

80.0%

Barrels/PA

12.5%

Expected BA

.317

Expected SLG

.705

Sprint Speed

0.0 ft/sec

Ground Ball %

20.0%

Line Drive %

20.0%

Fly Ball %

60.0%

Prospect Rankings History

View Complete Yainer Diaz Prospect Ranking History

Advanced Batting Stats

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Additional Stats

Games By Position

Defensive Stats

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Batted Ball Stats

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Stats Vs Upcoming Pitchers

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Astros Depth Chart

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Recent RotoWire Articles Featuring Yainer Diaz See More

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Yesterday

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RotoWire Roundtable Rankings: Bobby Witt Claims the Top Spot

15 days ago

With Shohei Ohtani set for more days off and fewer steals this season, Bobby Witt Jr. has moved into the top spot in our Roundtable Rankings.

Past Fantasy Outlooks

2024

2023

Despite serving as the No. 2 option in Houston behind Martin Maldonado, Diaz cracked 23 homers and finished as a top-12 fantasy catcher last season. Diaz slashed .282/.308/.538 and Statcast says he actually underperformed in regards to batting average and slugging -- his .287 xBA and .546 xSLG both ranked in the top eight percent of the league. Diaz is not particularly interested in taking walks (2.9 BB%) and his chase rate leaves open some questions about the sustainability of his contact. Further, Diaz's 21.9% HR/FB seems destined to fall, even with the boost provided by the Crawford Boxes. That being said, the Astros have already committed to Diaz being "the main guy" in 2024, and any giveback in the rate stats should in theory be softened by an increase in playing time. He wasn't a big name when he was traded in 2021, but fast forward a few years and Diaz is looking like a key piece on a championship-caliber ballclub.

Diaz is a good enough hitter that he should get backup catcher work this season and beyond. It will be his defensive development that determines whether he becomes a workhorse behind the plate. On lesser teams, he might get work at first base and designated hitter in addition to catcher, but those starts should be few and far between when the Astros are fully healthy. The one major flaw in Diaz's offensive game is how frequently (38% in the minors) he chases pitches out of the zone. He hit .306/.356/.542 with a 31.3 Hard% and 25 home runs in 105 games between Double-A and Triple-A. Despite his propensity to chase, Diaz logged a stellar 17.8 K% at Triple-A, but walked just 5.9% of the time. Diaz was age-appropriate for a catcher in the upper levels.

More Fantasy News

Back in action Sunday

CHouston Astros

March 16, 2025

Diaz (illness) is starting behind the plate and batting cleanup in Sunday's Grapefruit League game against the Mets, Chandler Rome of The Athletic reports.

ANALYSIS
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Recovering from illness

CHouston Astros

Illness

March 13, 2025

Diaz (illness) is out of the Astros' Grapefruit League lineup for a second straight day Thursday but will go through a full workout, Matt Kawahara of the Houston Chronicle reports.

ANALYSIS
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Taking seat Saturday

CHouston Astros

September 28, 2024

Diaz isn't in the Astros' lineup for Saturday's game against the Guardians.

ANALYSIS
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Three straight multi-hit games

CHouston Astros

September 23, 2024

Diaz went 3-for-5 with a double, two RBI and one run scored Sunday against the Angels.

ANALYSIS
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Three hits Sunday

CHouston Astros

September 9, 2024

Diaz went 3-for-5 with a double and two RBI in Sunday's loss to the Diamondbacks.

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Latest Fantasy Rumors

Option at first base?

CHouston Astros

July 20, 2024

The Astros could consider giving Diaz some playing time at first base, according to Chandler Rome of The Athletic.

ANALYSIS
The 25-year-old has seen most of his playing time behind the plate this season but also has 24 starts at designated hitter. The Astros don't have a clear answer at first base since the release of Jose Abreu, as Jon Singleton likely isn't a long-term solution. Diaz has carried a hot bat since the start of June with an .834 OPS, and seeing some time at first base could help keep him in the lineup while keeping the DH spot open for Yordan Alvarez or other position players. Victor Caratini is closing in on a return from a hip strain, and once he's healthy it could open up a more versatile role for Diaz.

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