The women's side came away with a 4-2 victory with goals to Emma Taylor, Tonina Staunton, Sally Pratley and Morgan Hubbard, while the men's side fell 4-1 to Central.
The fundraising efforts will continue on Sunday with United set to host a breakfast function to coincide with the auction and a raffle.
Breast cancer is one of the most commonly diagnosed cancers in Australia and all proceeds from the Canberra hockey community's efforts will go directly to the National Breast Cancer Foundation.
The Capital League 1 competition has three rounds left in the regular season before the finals begin, with Old Canberrans sitting on top of the men's competition on 42 points, with Central nipping at their heels.
Old Canberrans are in the hunt for top spot in the women's competition but they still have plenty of ground to make up on a dominant Tuggeranong outfit that has lost just one game all season.
Also read: Centurions fire ahead of ACT Gridiron finals