Round 7 saw Carlton and Collingwood battle it out for the fifth annual Richard Pratt Cup, which raises awareness of the rate of prostate cancer in Australian men. 

The match was played in memory of former Carlton president Richard Pratt, who died in 2009 following a battle with prostate cancer. 

While the Blues fell short on the field, the Richard Pratt Foundation will still benefit greatly.

As part of Carlton's continuing support of the Foundation, the Club is auctioning off the ball that was used in Friday night's blockbuster, which will be signed by the 22 Blues who took part in the game. 

All proceeds will be donated to the Richard Pratt Foundation. 

BIDDING IS NOW OPEN … and will close at 5pm on Sunday 11 May. 

To place a bid, click here.