What is the fee on Polymarket US for this market?

At the current typical price of 69¢, about 2¢ per contract (9.5% × price × (1 − price) per share on orders that take liquidity, the rate for accounts under $10,000 of 30-day volume since 6 November 2026; 6.95% in a new account's first week). On a $50 trade that is about $1.47.

What win rate do I need to break even?

About 71% if you hold to settlement, against a market price of 69%. The gap is the fee.

Markets › Polymarket US › Sports

2027 Men's Grand Slam Singles Winners on Polymarket US

This market will settle to Yes if Luciano Darderi wins at least one of the four 2027 Grand Slam mens singles titles: the Australian Open, Roland-Garros, Wimbledon, or the US Open. If the player does not win any of the four for any reason, including withdrawal or not competing, the market will settle to No. Outcome sourced from ATP.

Market says (typical open contract)

69%

Median YES price across 17 open contracts, 10 Nov 2026 04:28 UTC.

Real-world odds

—

No independent base rate yet. Until we connect one (sportsbook consensus, forecasts, the score), the market's own price is the best public forecast, and the fee sits on top of it.

Luck needed meter

62% 😈

Half luck. The favorite is clear, the fee is not small, and the payout on the favorite is thin.

The cover charge

Fee and break-even by purchase price
If you buy at	Fee per contract	On $50	Win rate to break even
30¢	2.0¢	$3.32	32.0%
50¢	2.4¢	$2.38	52.4%
69¢ (now)	2.0¢	$1.47	71.0%
70¢	2.0¢	$1.43	72.0%
90¢	0.9¢	$0.47	90.9%

Resting (maker) orders pay nothing; orders that take liquidity pay the fee. Formula: 9.5% × price × (1 − price) per share on orders that take liquidity (accounts under $10,000 of 30-day volume; 6.95% in a new account's first week and above $250,000). Break-even assumes you hold to settlement; trading out early pays the fee twice.

How long until your balance is $0 in this market? →

Open contracts right now

Open contracts in this series with price, implied probability, volume and close time
Contract	YES price	Implied	Fee at this price	Real-world odds	Luck needed	Closes
2027 Men's Grand Slam Singles Winners	99¢	99%	0.1¢	—	2%	Sep 27, 03:00 UTC
2027 Men's Grand Slam Singles Winners	64¢	64%	2.2¢	—	72%	Sep 27, 03:00 UTC
2027 Men's Grand Slam Singles Winners	68¢	68%	2.1¢	—	64%	Sep 27, 03:00 UTC
2027 Men's Grand Slam Singles Winners	99¢	99%	0.1¢	—	2%	Sep 27, 03:00 UTC
2027 Men's Grand Slam Singles Winners	39¢	39%	2.3¢	—	78%	Sep 27, 03:00 UTC
2027 Men's Grand Slam Singles Winners	49¢	49%	2.4¢	—	98%	Sep 27, 03:00 UTC
2027 Men's Grand Slam Singles Winners	69¢	69%	2.0¢	—	62%	Sep 27, 03:00 UTC
2027 Men's Grand Slam Singles Winners	86¢	86%	1.1¢	—	28%	Sep 27, 03:00 UTC
2027 Men's Grand Slam Singles Winners	59¢	59%	2.3¢	—	82%	Sep 27, 03:00 UTC
2027 Men's Grand Slam Singles Winners	29¢	29%	2.0¢	—	58%	Sep 27, 03:00 UTC
2027 Men's Grand Slam Singles Winners	33¢	33%	2.1¢	—	66%	Sep 27, 03:00 UTC
2027 Men's Grand Slam Singles Winners	99¢	99%	0.1¢	—	2%	Sep 27, 03:00 UTC
2027 Men's Grand Slam Singles Winners	99¢	99%	0.1¢	—	2%	Sep 27, 03:00 UTC
2027 Men's Grand Slam Singles Winners	49¢	49%	2.4¢	—	98%	Sep 27, 03:00 UTC
2027 Men's Grand Slam Singles Winners	93¢	93%	0.6¢	—	14%	Sep 27, 03:00 UTC
2027 Men's Grand Slam Singles Winners	69¢	69%	2.0¢	—	62%	Sep 27, 03:00 UTC
2027 Men's Grand Slam Singles Winners	99¢	99%	0.1¢	—	2%	Sep 27, 03:00 UTC

Who actually wins this market

Whoever posts the resting orders and collects the spread without paying a fee.
The venue, on every fee.
Not, on average, the person clicking buy because the chart is going their way. That was us.

Still want to play? Read the deal first: what the account asks for, what the bonus really is, and whether we are paid. Vendors sell bots for markets like this one; see the bot benchmark before you pay for one.