The 2015 pitchers for the Mariners included Felix Hernandez, Taijuan Walker, Hisashi Iwakuma, Roenis Elias and J.A. Happ.
| NO. | NAME | POS | HEIGHT | WEIGHT | DOB | AGE | BIRTHPLACE | ||
|---|---|---|---|---|---|---|---|---|---|
| 1 |  | J. Beimel | P | 6'3" | 205 | 4/19/1977 | 38 | St. Mary's, PA | |
| 2 | | R. Elias | P | 6'1" | 205 | 8/1/1988 | 26 | Guantanamo, Cuba | |
| 3 | | D. Farquhar | P | 5'9" | 185 | 2/17/1987 | 28 | Pembroke Pines, FL | |
| 4 | | C. Furbush | P | 6'5" | 215 | 4/11/1986 | 29 | South Portland, ME | |
| 5 | | M. Guaipe | P | 6'4" | 235 | 8/11/1990 | 24 | Barcelona, Venezuela | |
| 6 |  | J.A. Happ | P | 6'5" | 205 | 10/19/1982 | 32 | Peru, IL | |
| 7 |  | F. Hernandez | P | 6'3" | 225 | 4/8/1986 | 29 | Valencia, Venezuela | |
| 8 | | H. Iwakuma | P | 6'3" | 210 | 4/12/1981 | 34 | Tokyo, Japan | |
| 9 | | L. Kensing | P | 6'1" | 190 | 7/3/1982 | 32 | San Antonio, TX | |
| 10 | | D. Leone | P | 5'11" | 210 | 10/26/1991 | 23 | Norwich, CT | |
| 11 | | M. Lowe | P | 6'3" | 210 | 6/7/1983 | 32 | Houston, TX | |
| 12 | | L. Luetge | P | 6'4" | 205 | 3/24/1987 | 28 | Brenham, TX | |
| 13 | | Y. Medina | P | 6'3" | 245 | 7/27/1988 | 26 | Puerto Cabello, Venezuela | |
| 14 | | M. Montgomery | P | 6'5" | 215 | 7/1/1989 | 26 | Mission Hills, CA | |
| 15 | | V. Nuno | P | 5'11" | 210 | 7/26/1987 | 27 | National City, CA | |
| 16 | | E. Olmos | P | 6'4" | 220 | 4/12/1990 | 25 | Sylmar, CA | |
| 17 | | T. Olson | P | 6'3" | 195 | 10/2/1989 | 25 | Spokane, WA | |
| 18 |  | J. Paxton | P | 6'4" | 235 | 11/6/1988 | 26 | Richmond, Canada | |
| 19 | | J. Ramirez | P | 6'1" | 215 | 1/21/1990 | 25 | Yaguate, Dominican Republic | |
| 20 | | JC Ramirez | P | 6'4" | 250 | 8/16/1988 | 26 | Managua, Nicaragua | |
| 21 | | R. Rasmussen | P | 5'10" | 175 | 4/2/1989 | 26 | Pasadena, CA | |
| 22 | | F. Rodney | P | 5'11" | 230 | 3/18/1977 | 38 | Samana, Dominican Republic | |
| 23 | | D. Rollins | P | 6'1" | 210 | 12/21/1989 | 25 | Deberry, TX | |
| 24 | | C. Smith | P | 6'6" | 215 | 10/19/1989 | 25 | Midland, TX | |
| 25 | | T. Walker | P | 6'4" | 235 | 8/13/1992 | 22 | Shreveport, LA | |
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Team Batting Leaders 
HR
25
Arozarena
RBI
75
Arozarena
AVG
.278
Arozarena
Team Pitching Leaders 
W
12
Woo
K
194
Gilbert
ERA
3.57
Hancock
Team Rankings
HR
175
14th
R
624
28th
SO
1,301
12th
ERA
4.21
20th
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MLB 2026 Batting Leaders
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MLB 2026 Standings
| NL East | W | L | PCT | GB |
|---|---|---|---|---|
89 | 64 | .582 | ||
85 | 68 | .556 | 4.0 | |
76 | 77 | .497 | 13.0 | |
71 | 82 | .464 | 18.0 | |
69 | 84 | .451 | 20.0 | |
| NL Central | W | L | PCT | GB |
 Brewers - y | 95 | 58 | .621 | |
85 | 68 | .556 | 10.0 | |
76 | 77 | .497 | 19.0 | |
75 | 78 | .490 | 20.0 | |
71 | 82 | .464 | 24.0 | |
| NL West | W | L | PCT | GB |
 Dodgers - y | 93 | 60 | .608 | |
84 | 69 | .549 | 9.0 | |
80 | 73 | .523 | 13.0 | |
64 | 89 | .418 | 29.0 | |
56 | 97 | .366 | 37.0 |
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