This friendly rivalry is different to the others.
Born a week apart in 1987, Andy Murray and Novak Djokovic have been acquaintances for over 15 years.
Djokovic described the relationship between his team and the Brit's as a "very good" one.
On Sunday, that friendliness will be put aside as the duo battle it out in the Australian Open final for the third time.
The biggest moments on Rod Laver Arena have belonged to Djokovic.
In 2011 and 2013, the Serbian world number one proved too good for Murray in the decider.
Djokovic has owned their recent meetings, winning seven of the past eight – the 2013 Wimbledon final going Murray's way.
Speaking after his semi-final win, Djokovic was asked what made his rivalry with Murray special – and different to those with Roger Federer and Rafael Nadal.
"The fact we know each other since 11, 12. There is only week difference between us," he said.
"We have a very similar game and very similar role to professional tennis. So I think that's what makes it very special."
There was even time for jokes.
"His accent is fine," Djokovic said when asked if he had problems with Murray's accent.
"He spends a lot of time in London. I know he lives there.
"He's trying to talk very clear and slow to everybody. I thank him. He's got couple of guys around -- we have a very good relationship, my team and his team, so we always joke around.
"There was a physiotherapist from Scotland that was with him I think a couple years ago. It was very hard to understand what he was saying.
"But his accent is absolutely fine. He speaks very clear."
Djokovic is ready for a physical battle as two of the sport's finest defensive players go head-to-head.
Awaiting him, Murray – hoping for third time lucky in Melbourne finals against Djokovic and fourth time lucky in Australian Open deciders overall.