How players' bushfire-relief pledges added up

The Australian Open may have come to a close, but the bushfires in the country burn on, and the need for assistance in affected areas continues.

At the beginning of the season, Nick Kyrgios started a movement among tennis players, pledging 200 Australian dollars for every ace he'd hit during the summer swing. Many others quickly joined him, promising donations for everything from double faults to match wins.

Kyrgios, for his part, popped 69 aces at the ATP Cup, plus 100 more in Melbourne (tied for most in the tournament, despite a fourth-round exit), for a grand total of $33,800.

Here's how some of his fellow competitors fared, with estimates of what they would donate:

Simona Halep

Action: Giving coach Darren Cahill "a hard time" ($200)

Instances: 100 (per Halep's self-reporting)

Total: $20,000

Ashleigh Barty

Donation: Entirety of her Brisbane prize money

Result: Singles second round, doubles runner-up

Total: about $34,757

Alex de Minaur

Action: Hitting an ace ($250)

Instances: 18 in ATP Cup, missed Australian Open with abdominal injury

Total: $4,500

Belinda Bencic

Action: Double-fautling ($200)

Instances: 10 in Adelaide + 16 in Australian Open

Total: $5,200

John Millman

Action: Hitting an ace ($100)

Instances: 13 in ATP Cup + 14 in Auckland + 21 in Australian Open

Total: $4,800

Alexander Zverev

Action: Winning a match in Melbourne ($10,000)

Instances: 5

Total: $50,000

Dylan Alcott

Action: Serving an ace ($100 + $700 from partnering companies)

Instances: 42

Total: $33,600, donation bumped up to $40,000

John Isner

Action: Hitting an ace ($100) + 25 percent of prize money

Result: 85 aces + third-round finish

Total: $53,500

Karolina Pliskova

Action: Serving an ace ($200)

Instances: 42 in Brisbane + 19 in Australian Open

Total: $12,200

Meanwhile, at the superstar level Roger Federer, Rafael Nadal, Serena Williams, Novak Djokovic and Maria Sharapova all pledged substantial flat donations.