Jonatan Clase

21-Year-Old OutfielderOF

Seattle Mariners

2024 Stats

AVG

.250

RBI

Rest-of-Season Projections

AVG

RBI

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2024 Fantasy Outlook

Clase was middling at the plate as a 21-year-old at Double-A, logging a 67.3 percent contact rate and .222 batting average to go along with 13 home runs and 62 steals in 108 games. His .331 on-base percentage and the resulting havoc he caused on the bases allowed the switch hitter to still impact the game regularly, despite being a below league average hitter (94 wRC+), and his speed will be the key to him being an impactful fantasy outfielder. Clase has 70-grade speed and likes to run, so that will always define his fantasy relevance. He came into the year with 33 home runs in 236 games above rookie ball, and it will be tough for him to hit more than 15 in a MLB season while playing half his games in Seattle. Clase has two minor-league option years remaining and was summoned from Triple-A early in 2024 after showing improved plate skills. If he is playing regularly, his speed makes him worthy of a flyer in roto leagues. Read Past Outlooks

RANKSFrom Preseason

#601

ADP

Prospect

League Majors

Bats B

Throws R

40 Man Yes

Height 5'8"

Weight 150

DOB 5/23/2002

Drafted 2018

Sitting for nightcap

OFSeattle Mariners

April 21, 2024

Clase is not in the starting lineup for Game 2 of Sunday's doubleheader with the Rockies.

ANALYSIS
Clase will take a seat after he went 0-for-3 with a stolen base in Seattle's 2-1 extra-inning loss in Game 1 on Sunday. Dylan Moore will take over in left field and bat sixth in the nightcap.

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Batting Stats

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2024

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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 2022

+62%

OPS vs RHP

2024

+62%

OPS vs RHP

2023

No Stats

2022

No Stats

	OPS	PA	R	HR	RBI	SB	AVG	OBP	SLG
Since 2022vs Left	.400	5	0	0	0	0	.200	.200	.200
Since 2022vs Right	.646	16	1	0	3	2	.267	.313	.333
2024vs Left	.400	5	0	0	0	0	.200	.200	.200
2024vs Right	.646	16	1	0	3	2	.267	.313	.333
2023vs Left	0	0	0	0	0	0	0	0	0
2023vs Right	0	0	0	0	0	0	0	0	0
2022vs Left	0	0	0	0	0	0	0	0	0
2022vs Right	0	0	0	0	0	0	0	0	0
More Splits→	View More Split Stats

Home/Away Batting Splits

Since 2022

+28%

OPS on Road

2024

+28%

OPS on Road

2023

No Stats

2022

No Stats

	OPS	PA	R	HR	RBI	SB	AVG	OBP	SLG
Since 2022Home	.523	12	1	0	2	1	.182	.250	.273
Since 2022Away	.667	9	0	0	1	1	.333	.333	.333
2024Home	.523	12	1	0	2	1	.182	.250	.273
2024Away	.667	9	0	0	1	1	.333	.333	.333
2023Home	0	0	0	0	0	0	0	0	0
2023Away	0	0	0	0	0	0	0	0	0
2022Home	0	0	0	0	0	0	0	0	0
2022Away	0	0	0	0	0	0	0	0	0
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Stat Review

How does Jonatan Clase 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

0.20

BB Rate

4.8%

K Rate

23.8%

BABIP

.333

ISO

.050

AVG

.250

OBP

.286

SLG

.300

OPS

.586

wOBA

.263

Exit Velocity

89.0 mph

Hard Hit Rate

40.0%

Barrels/PA

0.0%

Expected BA

.181

Expected SLG

.245

Sprint Speed

26.1 ft/sec

Ground Ball %

46.7%

Line Drive %

0.0%

Fly Ball %

53.3%

Prospect Rankings History

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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Latest Fantasy Rumors

Potential trade chip

OFSeattle Mariners

July 20, 2023

Clase could be included as part of a package for Shohei Ohtani, speculates Jim Bowden of The Athletic.

ANALYSIS
Clase is posting a strong .255/.379/.497 slash with 16 home runs and 53 stolen bases across 372 plate appearances in the minors this season. The 21-year-old is in Double-A at the moment, but he's regarded as one of Seattle's top outfield prospects.

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2021 Fantasy Outlook

Clase had an impressive pro debut as a 17-year-old in the Dominican Summer League in 2019, hitting .300/.434/.444 (147 wRC+) with two home runs and 31 steals (on 41 attempts) in 63 games. He was dealing with an undisclosed injury during most of the fall instructional league in 2020, but the Mariners say he was able to hit and that his hit tool and power appear to be real. That power is a new and important development. Clase, who was listed at 5-foot-8, 150 pounds when he signed in 2018, was listed at 6-foot, 200 pounds at instructs. He is the fastest player in Seattle's farm system (at least a plus runner), and now it seems that Clase is has a chance to be a five-category fantasy contributor. Since we're still awaiting his official stateside debut, it's hard to say exactly where his offensive skills are now, but he has the physical tools to jump 100 spots on the prospect rankings this season.

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