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Compete in all 4 and receive...

Tournament Discounts

National WIFFLE® Grand Slam Champions:

2021 Event Dates

Hometown Cup:  July 23-25, New Carlisle, IN

GSWL Yard Open:  August 21-22, Staten Island, NY

NWLA Tournament:  September 17-19, Indianapolis, IN

United Wiffleball:  October 22-24, York, PA

Tournament Registration Links

Register for all four events before July 15th deadline to receive tournament discounts.

Grand Slam Memorabilia 

Name in the history books!

National WIFFLE® Grand Slam Participants:

Past Winners
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