Australian rugby boss John O'Neill said Adelaide may bid for the 2013 Sevens World Cup.

The city hosted the latest stop on the IRB world tour at the weekend and O'Neil said the ARU had held talks with the South Australian Government about the 2013 event.

Despite a slight downturn in crowd numbers for this year's edition of the tournament, which was expanded from two to three days, but ran headlong into a clash with the Adelaide versus St Kilda ALF match on Friday night.

O'Neil says there would likely be a greater expansion of Adelaide's role when the rebuilt members stand at Adelaide Oval is completed.

Meanwhile, Russia is another country that will be bidding to host the 2013 Sevens World Cup. Wales are the reigning champions.