At the peak of a long-running feud between Novak Djokovic and Nick Kyrgios, the prospect of them ever becoming pals seemed ludicrous.
After all, how could Djokovic warm to someone who he "had no respect for"?
What could stop Kyrgios thinking the Serb was a "tool" and a "strange cat" with a "sick" obsession for needing to be liked?
Yet here we are, a few years down the line, and the once-squabbling pair are now the best of buddies and making their debut as a doubles team.
Australian firebrand Kyrgios, often polarising but almost always entertaining, promised fun at the Brisbane International.