Prospect Rankings
2015
| Player | Position | Current Team | Bats | Throws | |||
|---|---|---|---|---|---|---|---|
| 1 | 
Alex Jackson | C |  Minnesota Twins | MLB | 30 | R | R |
| 2 | 
D.J. Peterson | 1B |  Colorado Rockies | AAA | 34 | R | R |
| 3 | 
Ketel Marte | SS/2B |  Arizona Diamondbacks | MLB | 32 | S | R |
| 4 | 
Patrick Kivlehan | OF/1B/3B |  Chicago White Sox | AAA | 36 | R | R |
| 5 | 
Gabriel Guerrero | OF | - | - | 32 | R | R |
Mariners Prospect Highlights
03:05
Colt Emerson talks his call up, making his MLB debut
May 19, 2026
00:07
Colt Emerson draws a walk in MLB debut
May 18, 2026
00:32
The moment Colt Emerson gets the call to the Majors!
May 17, 2026
00:48
Mariners call up No. 1 prospect Colt Emerson
May 17, 2026
00:17
Top prospect Colt Emerson homers, has three-hit game
May 6, 2026
00:22
Watch Arkansas Travelers vs. Midland RockHounds
April 2, 2026
02:25
Jerry Dipoto discusses Colt Emerson's extension
April 1, 2026
01:03
Colt Emerson and Mariners agree to 8-year extension
March 31, 2026