| Mariners Baseball - 2003 | ||||||||
| Player | # | Position | B/T | Ht | Wt | DOB | Hometown | School |
| David Buckley | 44 | C | R/R | 6-2 | 240 | 7/21/1976 | Manchester-by-the-Sea | Manchester High School |
| John Andrewes | 1 | LF/1B | R/R | 6-1 | 200 | 5/16/1977 | Gloucester | Gloucester High School |
| Joe Mitchell | 16 | P/OF/IF | R/R | 5-11 | 180 | 9/21/1977 | Gloucester | Gloucester High School |
| Bryan Lafata | 4 | P/C/SS | R/R | 5-8 | 190 | 8/1/1976 | Essex | Hamilton Wenham High School |
| Tom Van Note | 6 | SS/OF | R/R | Manchester-by-the-Sea | Manchester High School | |||
| Chris Lamothe | 17 | P/OF/1B | L/L | 6-2 | 225 | Newburyport | Newburyport High School | |
| Dan Elerio | 7 | IF/OF/C | R/R | Beverly | ||||
| Tyler Besse | 8 | IF/OF/C | R/R | Beverly | ||||
| Corey Hildonen | 10 | IF/OF | R/R | Essex | Hamilton Wenham High School | |||
| Bobby Whynott | OF/IF | R/R | 6-0 | 180 | Gloucester | Gloucester High School | ||
| Keith O'Leary | OF/1B/P | L/L | ||||||
| Eric Moore | OF/P | R/R | ||||||
| Jay Fronterieo | OF | R/R | Gloucester | |||||
| Kevin Harutunian | IF | R/R | Beverly | |||||
| Ian Buckley | OF | L/R | 6-1 | 205 | 10/8/1985 | Manchester-by-the-Sea | Manchester High School | |
| Justin Collens | IF/P | R/R | 6-0 | 200 | Manchester-by-the-Sea | Manchester High School | ||
| Ralph Bates | 72 | OF/IF | R/R | 6-0 | 200 | Manchester-by-the-Sea | Manchester High School | |
| COACHES | ||||||||
| Chuck Atwater | ||||||||
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