The centenary provides a double celebration as it also marks 35 years of netball at Kereone, one of the first in the Waikato to affiliate netball into a rugby club.
A Past v Present netball game at 11am kicks off Saturday's programme of sporting activities. JAB rugby follows at 1pm, including a curtain-raiser to the main game at 2pm when Kereone Seniors play Te Awamutu Marist.
"There'll be plenty of great entertainment for all and we haven't forgotten the youngsters who'll be there on Saturday. There's a bouncy castle and a special Kereone 100 Kids' Colouring Competition."
A centennial book, detailing Kereone's 100-year history and contribution to rugby, sports and the local community, will be available throughout the weekend.
"It's a rich history and there's been a lot of interest in the book, as well as in our auctions of a set of commemorative rugby jerseys and the two All Blacks' items that have been donated.
"All would be tremendous things for any rugby enthusiast to own and we're expecting some very lively bidding," says Aarts.
The weekend's celebrations close on Sunday morning with the unveiling of a centennial plaque and final chance to renew friendships at the clubrooms.
Due to popular demand registrations for Kereone's May 17 to 19 celebrations have been extended and can be made at kereonersc100.floktu.com