An extra 900,000 tickets for this summer's Olympic Games in London will go on sale this Friday morning.
The 20,000 people who missed out in the first two rounds of sales earlier this year will be given priority.
Once their 31-hour time period passes, another one million people who were unsuccessful in the first ballot will be given the opportunity to submit their application.
"We know thousands of sports fans were disappointed when they missed out in the initial sales period because of the massive demand for tickets," said London 2012 chairman Sebastian Coe.
"We promised we would prioritise these fans when we released the contingency tickets, which is exactly what we are doing."
Tickets will be available for purchase from 11am.
