Three of Australia's top tennis talents have pledged to donate money to bushfire relief all summer long, after Alex de Minaur and John Millman joined Nick Kyrgios' call for funding to exhausted firefighters.

"I’m kicking off the support for those affected by the fires. I’ll be donating $200 per ace that I hit across all the events I play this summer," Kyrgios tweeted just after 9pm on Thursday.

His fellow pro de Minaur responded shortly after, saying: "I will go $250 per ace, just because I don't think I'll be hitting as many aces as you mate."

Millman also weighed in, saying: "I’m not at your level boys but I want to get involved. $100 for an ace over the Australian summer."