The GAA are hoping to put more tickets on general sale for the All Ireland senior football semi final between Mayo and Dublin, once club allocations are finalised.
Saturday's showdown is set to be an 82 thousand sell-out at Croke Park.
Thousands of Mayo supporters were left disappointed yesterday, after queuing for hours in Supervalu and Centra stores across the county, and online at Tickets.ie
Fans were queuing in stores across Mayo from before tickets went on sale at 10am yesterday morning, but the system seemed to go down several times during the day, leaving only a small percentage with tickets.
Similarly for those who went online, many were left in a virtual queue for hours, only to be told in the late afternoon that there were no further tickets left online.
Frustrated supporters contacted Midwest Radio throughout the day, and took to social media platforms to outline their anger at the system.
The GAA has denied its system crashed, but says it was slowed down due to the unprecedented demand for semi-final tickets.
The bulk of the tickets will go to GAA clubs, while about 7,000 season ticket holders across the two counties will also have to be accommodated.
After that, a fresh batch of tickets is expected to go on general sale for Saturday's matches, which start at 3pm with the Mayo minors taking on Cork, followed by the senior showdown between Mayo and Dublin at 5pm.