About Us

We were founded in 1993 and have been serving Washington and Oregon ever since. Our focus has been on providing a well-planned camp experience that is like no other. Our camp was founded and operated by educators who have played high-level baseball and softball. It is based upon sound educational principals always spiced with our total love for the game. Thank you for visiting our web site. Please be sure to tell a friend or two about us. 

More about Grand Slam Camps:

Grand Slam baseball and softball camps recognizes the importance of children needing to enjoy playing their sport. If they are having fun, they will want to keep playing and keep improving.  To make that happen, Mariners Camps focus on being organized and efficient, with little down time. Our Complete Camp  is designed to provide numerous succinct instruction sessions followed by lots of play to reinforce skills and provide situational game experience. Our Skills Camp  session takes specific instruction to a higher more focused age and skill level appropriate level. Our Complete + Skills Bundle and Complete + Extended Day are the best of both worlds for a full day of age-based additional instruction and practice.

The inclusion of baseball and softball culture through trivia sessions and daily handing out of baseball cards, giveaways and prize drawings all add to our unique experience.  Couple this with an enviable coaching staff and you have a hint at the special formula that makes up Mariners Grand Slam Camps. We are very proud of the Mariners Grand Slam Camp experience. We hope to see you and your young campers out at camp this summer learning, enjoying playing and making lifetime memories!

Although we are a regional camp, we have had campers from France, Germany, Korea, Japan, Australia, Canada and all over the United States.

Many campers return year after year and are truly disappointed when their age requires them to "retire" from camp.

Our Philosophy

*Teach, reinforce and insist upon the fundamentals of baseball / softball.

*Provide positive role models in a safe, upbeat and fun environment.

*Build a lifelong love of the game in each camper.