It took them 43 Grand Slam singles titles and 21 years to face each other for the first time but when the moment finally came, tennis legends Roger Federer and Serena Williams gave the crowd more than what they came for as they captured the moment with the 'greatest selfie of all time'.
Federer's Switzerland won 4-2, 4-3 (3) against Serena's USA in a mixed doubles decider at the Hopman Cup.
The duo then clicked a selfie on court as the 14,000 capacity crowd cheered the legends on court.
Both of them were complimentary of each other after the match.
"What a pleasure. What an honor," Federer said. “It was nerve-wracking, too. I thought, 'I've got to win this point but it is Serena Williams.'
"People talk about her serve so much and I see why it is such a wonderful serve because you just can't read it," he added.
"It was a great experience," Serena said. "I’m sorry it had to finish; I was just warming up. It was such fun, we grew up together. It was super cool. I wanted to take pictures and bring my baby out.”
"This guy (Federer) is great, both off the court and on the court. I think his serve is super-underestimated. It’s a killer serve, you can’t read it. I watched him all the time and I never knew how amazing it was,” she added.
Defending champion Switzerland will qualify for Saturday's final if it beats Greece on Thursday.