Tennis odds on Kalshi vs Polymarket
ATP, WTA and ITF match markets. Right now there are 134 open Tennis markets — 108 on Kalshi, 26 on Polymarket — carrying $1.9M of volume in the last 24 hours.
Open Tennis markets, by volume
| Market | Venue | Yes | 24h volume | Closes |
|---|---|---|---|---|
| Cerundolo vs Kecmanovic — Juan Manuel Cerundolo | kalshi | 53¢ | $480k | 11-01 13:00 UTC |
| Cerundolo vs Kecmanovic — Miomir Kecmanovic | kalshi | 47¢ | $405k | 11-01 13:00 UTC |
| de Minaur vs Alcaraz — Carlos Alcaraz | kalshi | 82¢ | $281k | 11-01 16:00 UTC |
| Baez vs Machac — Tomas Machac | kalshi | 94¢ | $138k | 11-01 13:00 UTC |
| Tirante vs Bellucci — Mattia Bellucci | kalshi | 98¢ | $121k | 11-01 13:00 UTC |
| Erste Bank Open: Alex de Minaur vs Carlos Alcaraz | polymarket | 21¢ | $59k | 11-01 13:10 UTC |
| Bonzi vs Hanfmann — Benjamin Bonzi | kalshi | 81¢ | $49k | 11-01 13:00 UTC |
| de Minaur vs Alcaraz — Alex de Minaur | kalshi | 18¢ | $43k | 11-01 16:00 UTC |
| Hijikata vs Kopriva — Rinky Hijikata | kalshi | 96¢ | $39k | 11-01 13:00 UTC |
| Lehecka vs Vacherot — Valentin Vacherot | kalshi | 37¢ | $29k | 11-01 17:30 UTC |
| Baez vs Machac — Sebastian Baez | kalshi | 7¢ | $25k | 11-01 13:00 UTC |
| Bonzi vs Hanfmann — Yannick Hanfmann | kalshi | 20¢ | $24k | 11-01 13:00 UTC |
| Swiss Indoors Basel: Jiri Lehecka vs Valentin Vacherot | polymarket | 63¢ | $20k | 11-01 14:30 UTC |
| Lehecka vs Vacherot — Jiri Lehecka | kalshi | 64¢ | $18k | 11-01 17:30 UTC |
| Prudential Hong Kong Tennis Open: Venus Williams vs Mary Stoiana | polymarket | 19¢ | $13k | 11-02 10:30 UTC |
| Curitiba: Alice Tubello vs Julia Grabher | polymarket | 46¢ | $11k | 11-01 14:10 UTC |
| Tirante vs Bellucci — Thiago Agustin Tirante | kalshi | 3¢ | $10k | 11-01 13:00 UTC |
| Prudential Hong Kong Tennis Open: Leylah Fernandez vs Sofia Kenin | polymarket | 65¢ | $9k | 11-03 02:00 UTC |
| Rolex Paris Masters: Alejandro Tabilo vs Rafael Jodar | polymarket | 23¢ | $9k | 11-02 09:00 UTC |
| Rolex Paris Masters, Qualification: Adolfo Vallejo vs Lorenzo Sonego | polymarket | 44¢ | $7k | 11-01 13:30 UTC |
The 20 most active of 134, by 24h volume across both venues, refreshed every few minutes. A market listed on only one venue has no cross-venue price to compare against — which is true of most of them.
What two venues' prices are worth
A gap between Kalshi and Polymarket on the same Tennis market is usually fees, depth, or two contracts that settle differently — not free money. The arbitrage guide shows today's gaps before and after fees, and the fee page shows why the cost peaks near 50¢.
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