The London 2012 Olympics looks set to be a sell-out, chief executive Paul Deighton has suggested.
He said: "You would have to say, based on the extraordinary demand that we saw in the first round and the second chance sales, that the remaining tranche of tickets that we will put on the market next year will see equally strong demand.
"The only tickets that we had left over were some soccer tickets. With soccer we have sold more tickets than any other kind of ticket and, of course, people do not even know yet which matches are being played or what the draw is.
"With that information we would hope we would have a really good chance of selling those too."
Another major round of ticket sales takes place early next year.
A large number of football tickets have been up for grabs because the men's and women's matches are played in big arenas.
These include Wembley Stadium, City of Coventry Stadium, the Millennium Stadium, Hampden Park, St James' Park and Old Trafford.
More than 3.5 million tickets have been sold so far across all sports.
London 2012 chairman Lord Coe noted: "There were 23 million ticket applications by two million people, that's an extraordinary volume, a world record-breaking demand for any sporting event on the planet."
There are 6.6 million tickets available to the public in total.