The 2013 roster for the Mariners included Hisashi Iwakuma at pitcher, Mike Zunino at catcher, Justin Smoak at first baseman, Nick Franklin at second baseman and Kyle Seager at third baseman.
| NO. | NAME | POS | HEIGHT | WEIGHT | DOB | AGE | BIRTHPLACE | ||
|---|---|---|---|---|---|---|---|---|---|
| 1 |  | D. Ackley | OF | 6'1" | 205 | 2/26/1988 | 25 | Winston-Salem, NC | |
| 2 | | A. Almonte | OF | 5'9" | 210 | 6/27/1989 | 24 | Santo Domingo, Dominican Republic | |
| 3 | | R. Andino | SS | 5'11" | 185 | 4/25/1984 | 29 | Miami, FL | |
| 4 | | B. Bantz | C | 6'1" | 205 | 1/7/1987 | 26 | Arlington, TX | |
| 5 | | J. Bay | OF | 6'2" | 210 | 9/20/1978 | 34 | Trail, Canada | |
| 6 | | B. Beavan | P | 6'7" | 245 | 1/17/1989 | 24 | Irving, TX | |
| 7 | | H. Blanco | C | 5'11" | 220 | 8/29/1971 | 41 | Caracas, Venezuela | |
| 8 | | J. Bonderman | P | 6'0" | 220 | 10/28/1982 | 30 | Kennewick, WA | |
| 9 | | C. Capps | P | 6'5" | 220 | 8/7/1990 | 22 | Kinston, NC | |
| 10 | | E. Chavez | OF | 5'11" | 170 | 2/7/1978 | 35 | Valencia, Venezuela | |
| 11 | | D. Farquhar | P | 5'9" | 185 | 2/17/1987 | 26 | Pembroke Pines, FL | |
| 12 | | N. Franklin | 2B | 6'1" | 190 | 3/2/1991 | 22 | Sanford, FL | |
| 13 | | C. Furbush | P | 6'5" | 215 | 4/11/1986 | 27 | South Portland, ME | |
| 14 | | F. Gutierrez | OF | 6'2" | 200 | 2/21/1983 | 30 | Caracas, Venezuela | |
| 15 | | A. Harang | P | 6'7" | 260 | 5/9/1978 | 35 | San Diego, CA | |
| 16 |  | F. Hernandez | P | 6'3" | 225 | 4/8/1986 | 27 | Valencia, Venezuela | |
| 17 | | R. Ibanez | OF | 6'2" | 225 | 6/2/1972 | 41 | New York, NY | |
| 18 | | H. Iwakuma | P | 6'3" | 210 | 4/12/1981 | 32 | Tokyo, Japan | |
| 19 | | B. LaFromboise | P | 6'4" | 225 | 6/25/1986 | 27 | Downey, CA | |
| 20 | | A. Liddi | 1B | 6'4" | 225 | 8/14/1988 | 24 | San Remo, Italy | |
| 21 | | K. Loe | P | 6'8" | 245 | 9/10/1981 | 31 | Simi Valley, CA | |
| 22 | | L. Luetge | P | 6'4" | 205 | 3/24/1987 | 26 | Brenham, TX | |
| 23 | | B. Maurer | P | 6'5" | 230 | 7/3/1990 | 22 | Newport Beach, CA | |
| 24 | | Y. Medina | P | 6'3" | 245 | 7/27/1988 | 24 | Puerto Cabello, Venezuela | |
| 25 | | B. Miller | SS | 6'2" | 200 | 10/18/1989 | 23 | Orlando, FL | |
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