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National Wiffle® Grand Slam

The Wiffle®Ball Championship is proud to be one of the four National Wiffle® Grand Slam Championships for 2021. The Grand Slam represents various styles of wiffleball across the country.

The Grand Slam encourages players to participate in all four events throughout the summer and fall. Players registered for all tournaments by July 15th will be credited for their portion of the team entry fee into The Championship.

Learn more about the Grand Slam here.