Novak Djokovic admits his friendship with Andy Murray, which began when they first clashed as 11-year-olds at a junior tournament in south-west France, will be tested to the full when they meet in Sunday's Wimbledon final.
The world's top two players will face each other for the 19th time with Djokovic seeking his second Wimbledon title and Murray bidding to become Britain's first men's champion since Fred Perry in 1936.
For two men born just seven days apart in 1987, it'll be the latest clash in a rivalry which started in Tarbes 16 years ago.
"It was maybe my first international tournament. I remember his curly hair. That's all I remember. I remember I had a short visit on the tennis court," said world number one Djokovic.
"On and off the court we have lots of respect for each other. Always very fair, very honest relationship.
"You know, now we are big rivals and it's difficult. He has his own team, his own routines, his own way. I have on my side also individually.
"So we don't get together and have dinners and parties, but we definitely always chat and remember the fun days we had as juniors."
Djokovic, seeking to win a seventh major, hopes that should he win on Sunday, he will still receive a warm welcome in Scotland.
The Serb spent time at Gleneagles with girlfriend Jelena Ristic last year and they even passed Murray's home town of Dunblane.
"I was on the highway. I made a picture of the road sign of Dunblane and I sent him that photo. He said, What are you doing there? I said, I was paying you a visit but you're not at home," recalled Djokovic. Also read Battle of WAGs
"I made a little surprise for my girlfriend because Scotland and Britain is full of beautiful medieval castles and we are in love with that. We love that fairytale, romantic, medieval sights.
"I took her there for her birthday. We spent a few days. We didn't spend much time outdoors because it was raining all the time, which is very strange for this part of the world!"
Djokovic said he will not get caught up in Britain's desire to see Murray end the 77-year wait for a men's singles champion at their home Grand Slam. Read Murray spurred on by last loss at Wimbledon
"For me it's another final. I don't really think about that fact. I'm just trying to focus and get ready for what's expecting me," he said.