Yet both players have maintained their off-court clashes of the past - notably almost three years ago when Tomic accused Kyrgios of faking an illness to get out of playing a Davis Cup match - are behind them, and considering the relaxed nature of this tournament, it's unlikely sparks will fly when the pair finally do face off across the net.
Squaring off for the first time in their careers as they prepare for next week's Australian Open, Tomic dominated his higher-ranked opponent to win 6-3 6-4, as he finished off the match in freakish circumstances.
Bernard Tomic and Nick Kyrgios went head-to-head for the first time in their careers at the Kooyong Classic Exhibition Event overnight, with the all-Australian contest bringing up some interesting moments.
"His game wasn't on song yesterday, I've got to be honest".
"I'm feeling a bit rusty, but I'm hitting the ball well and feel on good form".
It could have been worse for Kyrgios, a former Open quarter-finalist who has slipped to 50th in the rankings, and Tomic, three-times a second-week challenger at the season's first major.
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There was confusion from Kyrgios' end as he processed what had happened before the world No 51 started walking to the net, albeit shaking his head.
"If I was one of the top seeds, I'd be a bit anxious about him next week".
"I just count money, that's all I do".
Tomic, still just 26, has fought back to a world ranking of No.85 after blowing out to No.243 during a tough 2018.
While spectators fumed, both players declared themselves satisfied with their form, heading into next week's Australian Open in Melbourne.
Kyrgios, who lost in the second round at the Brisbane International last week, had a break point early in the second but was unable to consolidate with Tomic then breaking at 3-3. "I'm okay now (with tennis)".