Fibonacci
Recommended. Later rounds matter more, but one lucky champion pick can't decide everything.
Tennis bracket predictor for offices, clubs & groups
Run your own Australian Open bracket challenge. Everyone picks the winner of every match, from the first round to the final, scores more for every round their picks win, and follows a live leaderboard until the champions are crowned at Melbourne Park.


Used by 500+ fundraisers and 5k+ offices and groups, with 51k+ players








At a glance
A bracket challenge is a tennis predictor game for your group. Once the official draw is published, everyone fills in a bracket by picking the winner of every match, round by round, until they have chosen a champion. Each correct pick scores points, and later rounds are worth more.
You may know it as a tennis bracket, a pick'em or a draw predictor. Sweepzy runs it online: one invite link, picks on any phone or laptop, automatic scoring as results come in, and a live leaderboard everyone can follow.
Quick start
Choose how your group will play. The event builder opens next with the Australian Open already selected.
Built for 254 picks
A Grand Slam draw has 128 players. Sweepzy breaks it into pieces you can finish over a coffee.

Automatic scoring
Every correct match winner scores, and each round is worth more than the last, so a player you back all the way to the title keeps adding points. Organisers choose the scoring system; Fibonacci is the default.
| Round | Matches per draw | Fibonacci Default | Doubling | Sequential |
|---|---|---|---|---|
| Round 1 | 64 | +1 | +1 | +1 |
| Round 2 | 32 | +2 | +2 | +2 |
| Round 3 | 16 | +3 | +4 | +3 |
| Round 4 | 8 | +5 | +8 | +4 |
| Quarter-finals | 4 | +8 | +16 | +5 |
| Semi-finals | 2 | +13 | +32 | +6 |
| Final | 1 | +21 | +64 | +7 |
| Perfect bracket | 127 | 295 | 448 | 247 |
Recommended. Later rounds matter more, but one lucky champion pick can't decide everything.
Each round is worth twice the last. Picking the champion is the big prize.
One extra point per round. Rewards getting lots of early matches right.
Tiebreaks: countback on the most correct champions, then finalists, then semi-finalists and so on back to the first round. Identical brackets are settled by random selection.
Live leaderboard
Scores update as results come in. Alongside the total, every entry shows its correct picks, the most points it can still reach, and its champions, struck through as soon as they are knocked out.

Shows how many points each bracket can still score, so everyone knows if they are still in with a chance.
When both draws are in play, the leaderboard also has a men's-only and a women's-only view for separate prizes.
Once picks lock, open any entry from the leaderboard to see the picks behind the score.
For organisers
Men's and women's singles, or just one draw for a shorter 127-pick bracket.
Fibonacci, Doubling or Sequential. Entrants can open the scoring at any time from the bracket.
Leave unfinished brackets as they are, or auto-complete them by seeding or at random when picks lock.
We email you when the draw is out, remind entrants with unfinished brackets the day before the lock, and send round summaries during play.
How it works
Pick Office & Group or Fundraiser, then Bracket Challenge. The Australian Open is already selected.
Share one link or QR code by WhatsApp, Teams, Slack or email. Entrants can join before the draw is out.
Brackets open as soon as the official draw is published, and lock when play starts.
Scores and the leaderboard update through the tournament, right up to both finals.
Tennis clubs, schools & charities
There is no upfront cost. A small platform fee applies to paid entries only and is confirmed during activation.
Office & group pricing
Start free for a small group and upgrade only when you need more entries. Pricing is shown in USD for this visit.
$0
Up to 4 entries
No payment needed$10
Up to 15 entries
$0.67 per entry when full$20
Up to 30 entries
$0.67 per entry when full$30
Up to 50 entries
$0.60 per entry when full$45
Unlimited entries
One fixed price. Your effective cost per entry keeps falling as your group grows.Questions, answered
A tennis bracket predictor for your group. Before play starts, everyone fills in a bracket by picking the winner of every match in the singles draw, from the first round to the final. Each correct pick scores points, later rounds are worth more, and a live leaderboard shows who is ahead until the champions are crowned.
No. Sweepzy lets you run your own private bracket challenge for your office, club or friends, with your own prizes, branding and leaderboard. It is not affiliated with Tennis Australia or the Australian Open.
The official draw is expected on Thursday 14 January. Your bracket challenge opens for picks as soon as it is published. Picks lock when play starts, on Sunday 17 January at 10:55 Melbourne time. Entrants can change their picks as often as they like until then.
Each singles draw has 128 players, so a full bracket is 127 picks per draw. Organisers choose the men's draw, the women's draw or both (254 picks). Autofill completes any matches an entrant has not picked, by seeding or at random.
Every match winner you pick correctly scores points, and each round is worth more than the last. Points accumulate for every round your pick wins. The default Fibonacci scoring gives 1, 2, 3, 5, 8, 13, 21 points from the first round to the final, so a perfect bracket is worth 295 points per draw. Organisers can switch to Doubling or Sequential scoring instead.
Ties are settled by countback: the most correct champion picks, then finalists, then semi-finalists, and so on back to the first round. If two brackets are identical, random selection settles the tie.
Unpicked matches score nothing by default. Organisers can instead choose to auto-complete unfinished brackets when picks lock, either by seeding or at random. Picks already made are never changed.
The lucky loser or qualifier who takes their place in the draw inherits the picks for that spot. Anyone whose bracket included the withdrawn player gets an email listing the change, with a link to edit before the lock.
No. Entrants join from one link or QR code in any mobile or desktop browser, and create a free Sweepzy account with their email. The bracket works on phones one round at a time and on desktop as a full bracket.
It is free for up to 4 entries. Bigger offices and groups pay once per event for a plan sized for 15, 30, 50 or unlimited entries. Fundraisers have no upfront cost; a small platform fee applies to paid entries only.
Yes. Choose Fundraiser, set the entry fee, cause and prizes, and collect entries online. Card payments go to your club's Stripe account.
Page updated 13 November 2026. Screens show an example bracket; your bracket uses the official draw once it is published. Sweepzy is not affiliated with Tennis Australia or the Australian Open.
Ready for Melbourne?
Create a branded bracket challenge with automatic scoring and a leaderboard everyone can follow.