Colt Emerson

19-Year-Old ShortstopSS
Seattle Mariners A+
2025 Fantasy Outlook
Emerson is a really good pure hitter, but the rest of the overall fantasy package is to be determined. He walked more (18.1 BB%) than he struck out (14.0 K%) while hitting .293 as an 18-year-old at Single-A, and he hit .374 in 24 games in 2023 and hit .370 as one of the youngest players in the Arizona Fall League this year. Emerson struggled to a .225/.331/.317 slash line in 29 games at High-A shortly after his 19th birthday, and he missed a lot of time, especially in the first half, with a broken foot. Even amid his struggles in the Northwest League, Emerson boasted a 0.50 BB/K, so he was hardly overmatched. Emerson is a doubles maven, tallying nine doubles in 13 AFL games and 27 doubles in 94 career games in the minors, but he didn't homer in the AFL and has six homers thus far in pro ball. He hits the ball very hard (31.0 Hard%) for a teenage shortstop, but he ran groundball rates over 48 percent at Single-A and High-A last year. Emerson went 15-for-17 on stolen-base attempts in 70 games, so while he only grades as a 50-grade runner, he should be able to chip in double-digit steals early in his career. More over-the-fence power will certainly come, but it's unclear if he'll settle in as a 15-20 homer threat or a 20-30 homer threat. Read Past Outlooks
RANKS
Rest of Season From Preseason
Signed a $3.8 million contract with the Mariners in July of 2023.
Adjustments paying off
SSSeattle Mariners  A+
July 10, 2025
Emerson is hitting .333 with three home runs, two steals and a 12:12 K:BB in his last 20 games for High-A Everett.
Analysis
Emerson is slashing .265/.365/.411 with seven home runs, five steals and a 17.5 percent strikeout rate in 71 games for the AquaSox, but he's been making adjustments at the plate to better incorporate his lower half to get to more power while also introducing a toe-tap. Emerson's 51.4 percent groundball rate on the year is still something to monitor, but his stock is trending back up after a lengthy stretch where he struggled to hit for power.
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Batting Stats
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Minor League Game Log
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Minor League Left/Right Batting Splits (A+)
Since 2023
 
 
+35%
OPS vs RHP
2025
 
 
+37%
OPS vs RHP
2024
 
 
+71%
OPS vs RHP
2023
No Stats
OPS PA R HR RBI SB AVG OBP SLG
Since 2023vs Left .593 120 2 7 .196 .308 .284
Since 2023vs Right .800 349 8 44 .276 .372 .428
2025vs Left .513 75 2 6 .213 22.053 .344
2025vs Right .703 255 6 33 .284 94.004 .445
2024vs Left .338 45 0 1 .171 9.044 .195
2024vs Right .579 94 2 11 .253 33.021 .380
2023vs Left 0 0 0 0 0 0 0 0 0
2023vs Right 0 0 0 0 0 0 0 0 0
Prospect Rankings History
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Recent RotoWire Articles Featuring Colt Emerson See More
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2024 Fantasy Outlook
The Mariners snagged three seven-figure prep hitters in the first 30 picks of the 2023 MLB Draft, and Emerson got the biggest bonus ($3.8 million) and was first off the board at No. 22 overall. A lefty-hitting shortstop, Emerson has already gained good weight since the end of his high school season, up to 6-foot-2 and around 200 pounds. He slashed .374/.496/.550 with two home runs, 10 doubles and eight steals on eight attempts in 24 games across the Arizona Complex League and the Cal League. Emerson has been billed as hit-over-power, and indeed, he had a 17.5 K% and a 14.9 BB% in his pro debut, so the hit tool easily projects as plus. Defensively, he can play shortstop but may move to third base as needed. He isn't a plus runner, but has excellent instincts and gets the most out of his physical tools. Emerson could reach the majors sometime in 2025.
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Sent to minor-league camp
SSSeattle Mariners  A+
March 12, 2025
The Mariners reassigned Emerson to minor-league camp Wednesday, Shannon Drayer of SeattleSports.com reports.
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Receives spring training invite
SSSeattle Mariners  A+
January 30, 2025
The Mariners have extended Emerson an invitation to big-league camp during spring training.
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Advances to High-A
SSSeattle Mariners  A+
August 5, 2024
The Mariners promoted Emerson from Single-A Modesto to High-A Everett on Monday.
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Back in action for Nuts
SSSeattle Mariners  A+
July 12, 2024
Emerson (foot) is hitting .400 with three doubles and one steal in five games since being activated from the 7-day injured list with Single-A Modesto.
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Begins rehab assignment
SSSeattle Mariners  A+
Foot
June 30, 2024
Emerson (foot) has played two games in his rehab assignment, going 2-for-7 while suiting up for the ACL Mariners and Single-A Modesto on Thursday and Saturday, respectively.
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