SELLOUT crowds will attend both preliminary finals this weekend, with the AFL confirming no more tickets are available to either match.

The AFL has estimated a crowd of 97,000 will walk through the MCG gates on Saturday for the Tigers' first preliminary final since 2001.

Should the crowd reach that mark it would be one of the highest-attended games (excluding the Grand Final) on record since 1973.

A crowd of 98,002 was on hand to see Geelong defeat Collingwood by five points in the 2007 preliminary final, which is the highest crowd for a non-Grand Final since the 1970s.

Based on ticket sales, the Crows-Cats game is trending towards a crowd of more than 53,000, which would be close to breaking the all-time Adelaide Oval attendance record for an AFL game.

In round three this season, 53,698 showed up for the Showdown between Port Adelaide and Adelaide.