If you follow tennis, you have probably noticed something new appearing next to the usual match coverage. Prices quoted in cents. Percentages that move while a player is still serving.

That is a prediction market at work, and tennis has quietly become one of the busier sports on these platforms. Unlike a scoreboard, the number tells you what other people currently think is going to happen.

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This guide walks through the platforms people are actually using in 2026, what each one lists for tennis and what is worth checking before you pick one.

Key Takeaways

• Prices are set by traders rather than by an operator, and each contract settles at a fixed value once the match finishes.
• Tennis coverage varies widely. Some platforms list Grand Slam winners and set totals, while others focus on match winners.
• Most of these platforms operate under CFTC oversight, though the exact structure differs from one to the next.
• Fees are usually charged per contract rather than as a percentage, which affects short-priced positions most.
• State availability and minimum age are often what decide which platform you can actually use.

Quick Comparison

Platform	Oversight structure	Tennis markets listed	Availability notes
Fanatics Markets	Introducing broker to CDNA, a CFTC-regulated exchange and clearinghouse	Match winner contracts, Combo orders	21+ US residents, not available in all states
Kalshi	CFTC-designated contract market since November 2020	ATP, ATP Challenger, WTA and WTA Challenger sections, combo orders	18+, broad US availability
Polymarket	Polymarket US operates as QCX LLC, a CFTC-designated contract market	ATP, WTA and ITF matches, Grand Slam outrights, props	US and international access
DraftKings Predictions	CFTC-registered introducing broker and NFA member	Markets grouped by active ATP and WTA tournaments	Sports markets restricted in many states with a legal sportsbook
FanDuel Predicts	Contracts listed by CME Group exchanges, accounts held by a registered FCM	Tournament contracts, recently added	18+, nationwide access with markets varying by state

The Platforms Covered in This Guide

The order below reflects breadth of platform coverage and how each one approaches sports, not a quality ranking.

1. Fanatics Markets

Fanatics Markets sits inside the wider Fanatics ecosystem, so if you already know the brand from jerseys or fantasy, the name will be familiar. The platform takes a sports-first approach, and that shows in how the site is organized.

Live match trading is where the tennis section is focused. Each contract shows both players, the current implied probability and what a $100 position would return, with a chart tracking how that probability has moved across the day. If you want to follow a match point by point and watch pricing react to a break of serve, that is what the layout is built around.

Breadth across categories is the other thing worth knowing. The same account covers sports, politics, economy, companies, crypto and culture, and Combo orders let you group selections into a single position priced through a request for quote process.

On tennis specifically, listings are organized as individual matchups rather than grouped by tournament, and the current range covers match winners rather than outrights. If trading a Grand Slam winner months ahead is your main interest, check the other platforms below.

2. Kalshi

Kalshi has been a CFTC-designated contract market since November 2020, which makes it one of the longer-running names here. Users aged 18 and over can register, and the platform is available across most of the country.

Tennis is organized by tour tier, with separate sections for ATP, ATP Challenger, WTA and WTA Challenger. The platform also supports combo orders, which let you group two or more markets into a single position.

Everything trades as a simple yes or no contract priced between one cent and 99 cents. That price is the implied probability, so a contract at 72 cents means the market currently sees a 72 percent chance.

3. Polymarket

Polymarket US operates as QCX LLC, a CFTC-registered designated contract market. Polymarket acquired the licensed exchange and clearinghouse behind it in July 2025, and the US entity runs with hundreds of active tennis markets at any given time.

The tennis range is wide. ATP and WTA tour events, ITF matches, Grand Slam outrights, set totals and props all appear, and the busiest markets attract millions in volume.

That volume matters. Deeper markets tend to mean tighter pricing and an easier time entering or exiting a position before the match resolves.

4. DraftKings Predictions

DraftKings Predictions launched in December 2025 and operates separately from the DraftKings sportsbook. It is a CFTC-registered introducing broker and an NFA member, and the company acquired Railbird, a CFTC-registered exchange, to underpin the product.

One thing sets it apart immediately. Prices are displayed in American odds format rather than in cents, which makes the interface feel familiar if you are coming from a sportsbook background.

Tennis markets are grouped by active ATP and WTA tournaments rather than listed in one long feed. Note that sports markets are restricted in many states where DraftKings already runs a sportsbook, so availability depends heavily on where you are.

5. FanDuel Predicts

FanDuel Predicts is a joint venture between FanDuel Group and CME Group that also launched in December 2025. Contracts are listed by CME Group exchanges under CFTC regulation, and accounts are held with FanDuel Prediction Markets LLC, a registered futures commission merchant and NFA member.

The app is available nationwide for users 18 and over, though which markets you see depends on your state. Sports contracts have been concentrated in states without legal online sports betting.

Tennis is a newer addition here. The CFTC certified CME tennis tournament contracts fairly recently, so the range is narrower than what you will find on Kalshi or Polymarket.

How These Platforms Differ From a Traditional Sportsbook

This part is worth understanding before you compare anything else. Readers arriving from tennis betting markets will find the pricing model works differently from the start.

At a sportsbook, an operator sets a line and you either accept it or you do not. On a prediction market, the price reflects what other participants are currently willing to pay, and it moves as they change their minds.

Each contract settles at a defined value once the match resolves. If you hold the correct side, it pays out at that value. If not, it settles at zero.

The other real difference is that you are not locked in. On most of these platforms you can sell a position before the match ends, which means a contract bought at 40 cents can be closed at 65 cents without waiting for the final point.

Which Tennis Events Usually Get Listed

Coverage is not even across the calendar, and knowing the pattern helps you work out which platform suits the tennis you follow.

Grand Slams attract heavy trading activity. The Australian Open, French Open, Wimbledon and US Open account for a large share of tennis volume, and outright winner markets often open months ahead.

ATP and WTA tour events are widely covered during the season, usually as match winner contracts, with some platforms adding set and game markets.

Challenger and ITF matches appear on several platforms and fill the gaps in the calendar. Pricing here can move sharply because fewer people are trading.

Tier coverage is the clearest dividing line between platforms. Some concentrate on majors and main tour events, while others carry lower tiers in depth. It is worth matching this against what you actually watch.

What to Check Before You Choose

Market types available

Look at whether the platform lists only match winners or also set totals, game handicaps and tournament outrights. Outright markets on the majors, the titles that define the sport’s all-time greats, are the ones most likely to be missing. This narrows the field faster than anything else.

How fees are charged

Most of these platforms charge a flat fee per contract rather than a percentage of your position. DraftKings Predictions publishes a tiered structure of one cent to two cents per contract, with contracts priced near the extremes costing less than those in the middle range.

A flat per contract fee has a specific effect worth understanding. On a heavily favored player trading at 95 cents, a two cent fee is a large share of the possible five cent gain, while the same fee on a contract at 40 cents barely registers. Short-priced positions are where fees bite hardest.

Visible volume

Being able to see how much is trading in a market tells you whether you will be able to exit a position before settlement without moving the price against yourself.

State availability and age

This varies more than anything else on the list. Several platforms restrict sports markets by state, and minimum age is 18 in some places and 21 in others.

Risks and Eligibility

Trading event contracts involves significant risk and is not appropriate for everyone. You can lose the full cost of entering a position, including fees.

Restrictions and eligibility requirements apply, and availability varies by state. Minimum age differs by platform, so check before registering.

Live data shown on these platforms is for informational purposes and may be delayed or incorrect. Any decision you make is your own responsibility.

Frequently Asked Questions

What is a tennis prediction market?

A market where you trade contracts on tennis outcomes: Each contract is tied to a specific question, such as which player wins a match. The price reflects the implied probability, and the contract settles at a fixed value once the result is official.

How do prediction markets differ from tennis betting markets?

The price comes from participants rather than an operator: A sportsbook sets fixed odds and takes the other side. On a prediction market you trade against other participants, prices move continuously and you can usually exit a position before the event finishes.

Which tennis events are listed on these platforms?

Grand Slams, tour events and lower tiers, depending on the platform: The four majors attract the heaviest trading. ATP and WTA tour events are widely covered, and several platforms also list Challenger and ITF matches.

Are these platforms available in every state?

No, availability varies: Several platforms restrict sports markets in states where online sports betting is already legal, and some restrict access more broadly. Check the platform’s own eligibility information for your state.

Conclusion

The platforms in this guide are not interchangeable, and the differences between them are practical rather than cosmetic. One covers lower tiers in depth, another is built around live in-play movement, and a third may not list sports contracts in your state at all.

Two questions settle it faster than a feature list. Which tennis do you actually watch, and which of these platforms lists it where you live? Work through those in order, then check the fee structure against the kind of position you expect to take.