RADIO
Jonatan Clase is a fantasy baseball OF prospect sleeper and minor leaguer to know. Read our MLB prospects outlooks for fantasy baseball rookies and call-ups.
PROSPECT: Jonatan Clase, OF, Seattle Mariners
ANALYSIS: The Mariners signed Jonatan Clase out of the Dominican Republic in 2018. The diminutive switch-hitting outfielder (5'9", 150 pounds listed) had a strong debut in the DSL in 2019, slashing .300/.434/.444 with 31 steals.
After the pandemic season, Clase struggled to make the same consistent contact, posting a .245/.333/.388 line. He did put up a .267/.373/.463 line in 2022 in the Cal League with 13 home runs and 55 stolen bases, but he also struck out at a 27% rate.
Clase had an incredible start to the season in High-A, posting a .333/.453/.701 line in 21 games before being promoted to Double-A. He's struggled at the level, with a .222/.337/.429 line and striking out at a 30%+ rate. That said, his overall line is still 16 home runs and 47 steals in just 74 games, which is an incredible line.
VERDICT: Clase makes the most of his athletic tools, but he's still quite raw as a player, as the strikeouts show. He's moved into must-own territory in deep dynasty simply because of his power/speed combination. But how soon he'll work up to the majors remains to be seen. If the strikeout rate remains high, he could struggle at the advanced levels.
More Fantasy Baseball Analysis
Deyvison De Los Santos - Prospect Pickups
BALLER MOVE: Add in 12+ team leagues CALL-UP ETA: Now ANALYSIS: Following their Opening Day victory over the Colorado Rockies, the Miami Marlins promoted first base prospect Deyvison De Los Santos to the major-league roster. De Los Santos spent nearly the entire 2025 season at our Triple-A level and was knocking on the MLB door for most […]
Konnor Griffin: Prospects To Stash
BALLER MOVE: Add in all leagues CALL-UP ETA: April ANALYSIS: Shortly before the regular season began, the Pirates opted to send Griffin to Triple-A Indianapolis. Griffin remained on the roster throughout most of spring training and was one of the final cuts, suggesting he made a serious push to crack the Opening Day roster. However, the […]
Andrew Painter: Prospects To Stash
BALLER MOVE: Add in 12-team leagues CALL-UP ETA: July ANALYSIS: Philadelphia Phillies top pitching prospect Andrew Painter missed the entirety of the 2023 and 2024 seasons while recovering from Tommy John surgery. However, the budding ace made his Triple-A debut earlier this season and is quickly approaching his MLB debut. Painter began the season with Low-A, […]
Logan Henderson: Prospects To Stash
BALLER MOVE: Add in 12+ team leagues CALL-UP ETA: July ANALYSIS: Milwaukee Brewers right-handed pitching prospect Logan Henderson made his MLB debut earlier this season and was quite dominant, tossing 21 innings to the tune of a 1.71 ERA and a 0.95 WHIP. During this stint, Henderson struck out 29 batters and posted a strong 7.4% […]
Jordan Lawlar: Prospects To Stash
BALLER MOVE: Add in 12+ team leagues CALL-UP ETA: July ANALYSIS: Arizona Diamondbacks top prospect Jordan Lawlar received his second taste of the majors earlier this season but was unable to produce. Across eight games in Arizona, Lawlar did not tally a hit and held a 9:3 K:BB. During the 2023 season, Lawlar made his MLB […]
Download Our Free News & Alerts Mobile App
Like what you see? Download our updated fantasy baseball app for iPhone and Android with 24x7 player news, injury alerts, sleepers, prospects & more. All free!
Check out RotoBaller's entire fantasy baseball waiver wire pickups and sleepers list, updated daily!
