UFC 129 fighters Georges St-Pierre (left) and Jake Shields (right) show off their fists at the press conference for the upcoming mixed martial arts event that sold out in three days. ((Frank Gunn/Canadian Press) )

UFC 129 in Toronto is officially a record sellout at 55,000 tickets and a gate in excess of $10 million.

Organizers started at 42,000 tickets but quickly put more on the market after the first rush of sales Thursday.

The April 30 mixed martial arts show at the Rogers Centre doubles the largest gate and attendance records in UFC history. It has also set a single-day event gate record for the domed stadium.

The previous UFC attendance mark was 23,152 for UFC 124 at Montreal's Bell Centre in December. The old gate record was $5.4 million, set in December 2006 in Las Vegas at UFC 66.

"UFC continues to set new milestones," UFC president Dana White said in a statement Saturday. "We've sold 55,000 tickets in our first stadium event in Toronto and we continue to take the UFC to the next level."

More than 40,000 tickets sold Thursday in the first day of a pre-sale to members of the UFC Fight Club.

The rest were snapped up Friday, in another pre-sale, and Saturday, when tickets were made available to the general public.

StubHub, a ticket reseller, was offering seats from $143 to $9,999 Saturday. Tickets originally ranged in price from $50 to $800.

The Rogers Centre card will be the UFC's sixth in Canada. Montreal has hosted UFC 83, 97, 113 and 124 while Vancouver hosted UFC 115.

The main event features welterweight champion Georges St-Pierre of Montreal against Jake Shields. Mark (The Machine) Hominick of Thamesford, Ont., takes on featherweight champion Jose Aldo in the co-main event.