Clinic Opportunities - 2021

Mariners Grand Slam Camps 2021 Schedule is now available.

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The Mariners offer summer baseball and softball camps in Washington and Oregon.  Mariners Grand Slam Camps provide a unique experience developing skills for all players, whether they are beginners or advanced.  Campers are grouped by age and ability and coached by professional educators, former pros and current college players.  This allows the instruction and experience to match the level of all campers who attend.