Wiffleball V
July 6, 2002

Wiffleball VI
July 19, 2003

Wiffleball VIII
July 23, 2005

Wiffleball X
July 21, 2007

Wiffleball XII
July 18, 2009

Wiffleball XVI
July 20, 2013

Wiffleball XIX
August 6, 2016

Wiffleball XX
August 5, 2017