Geelong coach Mark Thompson has predicted fireworks in Sunday's much-anticipated blockbuster against St Kilda admitting on Wednesday that the AFL's two unbeaten teams don't get along.

The two teams have had an intense rivalry since both began to emerge from the wilderness simultaneously in 2003 with Thompson first suggesting, after the Cats beat the Saints in the last home-and-away round of that season, that his team had a better list than St Kilda despite popular belief to the contrary at that time.

And then when the Saints beat the Cats in the pre-season grand final of 2004, outspoken Geelong forward Paul Chapman again said publicly that he had no doubt the Cats were the better team.

Both teams just failed to reach the grand final that season but while it was the Cats that were the first of the two clubs to end a premiership drought that stretched back to the 1960s - when they won the 2007 Grand Final by a record margin in ending a barren 44-year period - the injury-riddled Saints fell by the wayside until this season.

Now both teams have won their first 13 games of the season - the first time ever two teams have been unbeaten at this stage of the AFL season - and Sunday's clash will be their first meeting since last year's qualifying final when the Cats handed St Kilda a 10-goal hiding at the MCG.

That match also ended controversially when Geelong defender Matthew Scarlett and St Kilda's favourite son Robert Harvey engaged in a war of words after the final siren with the Cats then furious when Scarlett copped the public blame for the incident considering Harvey's exalted status and his reputation as one of the game's 'Mr Nice Guys'.

Former St Kilda assistant coach Mick McGuane admitted earlier this week there was bad blood between the sides and that during his time at Moorabbin a hatred existed towards Geelong.

And Thompson admitted on Wednesday that the feeling was mutual, adding further spice to a game already being described as the biggest home-and-away match in AFL history.

"I don't think we like each other too much, that has been proven over the years," Thompson said.

"They have always been really physical games and both teams will probably end up with a few cuts and bleeds out of this match, I would say on Sunday."

And Scarlett is expecting plenty of attention personally but told Geelong's local newspaper _The Advertiser_ to 'bring it on'.

Thompson said it would not worry the Cats' champion defender one bit if the Saints decided to rough him up on Sunday after Scarlett reportedly prompted last year's altercation with Harvey by rubbing into the veteran that he was too old and that his dream of a premiership in his final season was over.

However the Cats privately maintained that Harvey contributed just as much to the incident by way of his own sledging, which so upset the Cats that Scarlett's team-mates Cameron Ling, Andrew Mackie and Chapman moved in to calm down the situation.

"I think Matty will be ready for it," Thompson said of Sunday's return encounter.

"I don't think it worries Matty too much."

"He is a real blunt, direct person and has the ability and has shown in the past that he can just play high-tempo football and high-pressure football and it doesn't matter what pressure he is under personally."

"So I have got no doubts he will be there amongst the best players on the weekend again."

And Thompson said a physical encounter would not worry his champion team - which has won 55 of its past 58 matches (the longest run of success in AFL history) - one bit.

"We like it when our boys are aggressive, as long as we play fair."

"We don't want to do anything stupid or undisciplined, we just want to be hard at the ball and hard at the man and play a really physical game of football."