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The Official Site of the Seattle Mariners

Mariners Grand Slam Camps

There are three camp sessions to choose from each week:

  1. Complete Baseball or Softball Camp (AM half day/4 days) - $135
  2. Baseball or Softball Skills Camp (PM half day/4 days) - $135
  3. Baseball or Softball Complete & Skills Camp Bundle (whole day/4 days) - $260

*A $10 convenience fee will be added to each transaction at checkout.

Locations in King, Snohomish, Pierce, Kitsap and Thurston Counties. Plus expansion to the Portland area in Clark County in 2018.

  • Campers receive a camp T-shirt, a daily giveaway and much, much more.
  • High quality, personal instruction from a talented staff.
  • Special Mariners surprises at every camp, including prize drawings and trivia sessions.
  • Each camper and their family will be invited to a special clinic at Safeco Field. (date TBD)
  • Emphasis on fun!

There simply is no experience like it.

Questions? Contact us:
Call, Text or leave Voice Mail: 360-802-2232

For nearly 25 years, Grand Slam Sports have run baseball and softball camps that are real summer camps, like parents remember from their childhood. You can count on top quality and personal instruction while having a blast. After all, it is a game and should be fun - lots of fun!

Registration for Mariners Grand Slam Camps is now closed for 2017. Please check back soon for information on 2018 camps.