2025 Stats
W-L
0-0
ERA
0.00
WHIP
0.00
K
0
SV
0
2026 Projections
2026 Fantasy Outlook
Sloan, a 6-foot-5 righty the Mariners gave $3 million to out of high school in 2024, doesn't have any obvious weaknesses after reaching High-A at the end of his age-19 season. Of course, the same thing could have been said at certain points about Andrew Painter, Jackson Jobe, Forrest Whitley, Dylan Bundy, etc... Prep righties can break our hearts for reasons that are seemingly outside of everyone's control. In his debut season, Sloan showed three plus pitches, ideal size, and an enviable combination of strikeout upside (27.0 K%) and the ability to generate weak contact (50.0 GB%). He closed the year with 13 strikeouts and zero walks in 11.1 innings across four starts at High-A. Health permitting, Sloan and his mid-90s fastball (touches 98 mph), upper-80s slider and low-90s changeup should give Double-A hitters fits this summer, and he could even reach Triple-A at some point in his age-20 season. History has taught us that there's an ever-present risk associated with hard-throwing righties at this stage of their development, but if Sloan continues on his current trajectory, he could finish 2026 as the game's No. 1 pitching prospect. Read Past Outlooks
Impressive spring debut
Sloan pitched a scoreless inning in his Cactus League debut against the Rangers on Sunday, striking out one in a perfect frame.
Analysis
Sloan lived up to the hype in his spring debut -- the righty needed just 12 pitches to set down Texas in order while touching 99 mph with his fastball. The 20-year-old Sloan posted a 3.73 ERA with a 1.16 WHIP and an impressive 90:15 K:BB across 21 starts (82 innings) last year between Single-A and High-A, his first season as a professional. Sloan will look to establish himself as one of the game's premier pitching prospects in 2026.
Sloan lived up to the hype in his spring debut -- the righty needed just 12 pitches to set down Texas in order while touching 99 mph with his fastball. The 20-year-old Sloan posted a 3.73 ERA with a 1.16 WHIP and an impressive 90:15 K:BB across 21 starts (82 innings) last year between Single-A and High-A, his first season as a professional. Sloan will look to establish himself as one of the game's premier pitching prospects in 2026.
Pitching Stats
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Minor League Game Log
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Minor League Left/Right Pitching Splits (A+)
Since 2023
-26%
BAA vs RHP
2025
-26%
BAA vs RHP
| BAA | K | BB | H | HR | |
|---|---|---|---|---|---|
| Since 2023vs Left | .350 | 3 | 0 | 7 | 1 |
| Since 2023vs Right | .259 | 10 | 0 | 7 | 2 |
| 2025vs Left | .350 | 3 | 0 | 7 | 1 |
| 2025vs Right | .259 | 10 | 0 | 7 | 2 |
| 2024vs Left | 0 | 0 | 0 | 0 | 0 |
| 2024vs Right | 0 | 0 | 0 | 0 | 0 |
| 2023vs Left | 0 | 0 | 0 | 0 | 0 |
| 2023vs Right | 0 | 0 | 0 | 0 | 0 |
Prospect Rankings History
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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More Fantasy News
Back in action after eye procedure
Sloan (eye) threw a live batting practice session Sunday, Daniel Kramer of MLB.com reports.
Analysis
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Out after eye procedure
Sloan will miss the rest of the season after undergoing surgery on his eye Friday, Ryan Divish of The Seattle Times reports.
Analysis
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Looks ready for promotion
Sloan has a 0.43 ERA, 0.67 WHIP and 21:2 K:BB in 21 innings over his last five starts for Single-A Modesto.
Analysis
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Falls to Seattle
The Mariners have selected Sloan with the 55th overall pick in the 2024 First-Year Player Draft.
Analysis
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Latest Fantasy Rumors
Rising through prospect ranks
Sloan was a breakout prospect in the Mariners organization during the 2025 season, according to Jonathan Mayo, Jim Callis and Sam Dykstra of MLB.com.
Analysis
Sloan was a second-round pick in the 2024 MLB Draft, but he handled things pretty well in his first pro season. He posted a 3.44 ERA and an impressive 5.2 K/BB in the hitter-friendly California League, which was enough to earn a promotion to High-A late in the year. He should continue to rise up the minor-league ranks in 2026 and should also continue to move higher up in the prospect lists.
Sloan was a second-round pick in the 2024 MLB Draft, but he handled things pretty well in his first pro season. He posted a 3.44 ERA and an impressive 5.2 K/BB in the hitter-friendly California League, which was enough to earn a promotion to High-A late in the year. He should continue to rise up the minor-league ranks in 2026 and should also continue to move higher up in the prospect lists.