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: TBA, Staten Island, NY
NWLA Tournament: September 17-19, Indianapolis, IN
United Wiffleball: TBA, York, PA
Tournament Registration Links
Hometown Cup
NWLA Tournament
GSWL Yard Open
United Wiffleball
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