Kevin Defrank
17-Year-Old
Miami Marlins Rookie
60-Day IL
Injury Biceps
Est. Return 8/1/2026
2026 Stats
W-L
0-0
ERA
0.00
WHIP
0.00
K
0
SV
0
Rest-of-Season Projections
2026 Fantasy Outlook
Defrank logged a 3.19 ERA, 1.29 WHIP and 34:10 K:BB in 31 innings across 10 starts in the Dominican Summer League. Arguably the top pitching prospect from the DSL last year, the 6-foot-5 Defrank already touches triple digits with his fastball and features an advanced changeup to go with an average slider. Defrank, who signed with the Marlins for $560,000 on Jan. 15, 2025, has a chance to rocket up prospect lists this year if he stays healthy and throws enough strikes. Read Past Outlooks
Signed a contract with the Marlins in January of 2025.
Won't pitch in FCL this year
DeFrank (biceps) was placed on the minor-league 60-day injured list Thursday, and the 17-year-old won't pitch in the Florida Complex League this season as a result, Christina DeNicola of MLB.com reports.
Analysis
The Marlins haven't yet ruled out DeFrank making a return late in the year and pitching for Single-A Jupiter. The right-hander generated some buzz this spring with an arsenal that featured a 100-mph fastball, but given his age and potential, the organization will likely proceed very cautiously with any arm injury for the 6-foot-5 prospect, and it wouldn't be a surprise if he were shut down for all of 2026.
The Marlins haven't yet ruled out DeFrank making a return late in the year and pitching for Single-A Jupiter. The right-hander generated some buzz this spring with an arsenal that featured a 100-mph fastball, but given his age and potential, the organization will likely proceed very cautiously with any arm injury for the 6-foot-5 prospect, and it wouldn't be a surprise if he were shut down for all of 2026.
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More Fantasy News
Out for foreseeable future
Defrank has no timetable for a return after suffering a right biceps injury, Christina De Nicola of MLB.com reports.
Analysis
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Wowing in camp this spring
Defrank has regularly hit 100 mph with his fastball this spring while showing a potentially plus changeup and the makings of a quality slider or sweeper, Sam Dykstra of MLB.com reports.
Analysis
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Shines in DSL
Defrank logged a 3.19 ERA, 1.29 WHIP and 34:10 K:BB in 31 innings across 10 starts in the Dominican Summer League.
Analysis
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