Tennis odds on Kalshi vs Polymarket

Live from both venues · 2026-09-17 04:36 UTC

ATP, WTA and ITF match markets. Right now there are 58 open Tennis markets — 25 on Kalshi, 33 on Polymarket — carrying $464k of volume in the last 24 hours.

25open on Kalshi
33open on Polymarket
$34kKalshi 24h volume
$430kPolymarket 24h volume

Open Tennis markets, by volume

MarketVenueYes24h volumeCloses
Valencia: Guiomar Maristany vs Marina Bassols Ribera polymarket 63¢ $317k 09-17 13:30 UTC
Phan Thiet 4: Blake Ellis vs Ilia Simakin polymarket 23¢ $22k 09-17 04:50 UTC
Caldas da Rainha: Francisca Jorge vs Victoria Jimenez Kasintseva polymarket 45¢ $22k 09-17 13:30 UTC
Frech vs Jovic — Iva Jovic kalshi 75¢ $9k 09-17 23:10 UTC
Guangzhou: Petr Bar Biryukov vs Naoya Honda polymarket 66¢ $9k 09-17 07:30 UTC
M15 Hurghada, Main Draw: Completed Match: Ivan Gretskiy vs Keshav Chopra polymarket 51¢ $7k 09-17 06:00 UTC
Guangzhou: James Kent Trotter vs Mitsuki Wei Kang Leong polymarket 66¢ $7k 09-17 07:30 UTC
M15 Hurghada, Main Draw: Completed Match: Sergey Betov vs Viktor Frydrych polymarket 51¢ $6k 09-17 06:00 UTC
Bucsa vs Bejlek — Sara Bejlek kalshi 65¢ $6k 09-17 21:00 UTC
W35 Hurghada, Main Draw: Completed Match: Emily Appleton vs Yuliya Hatouka polymarket 51¢ $5k 09-17 06:00 UTC
Bucsa vs Bejlek — Cristina Bucsa kalshi 36¢ $4k 09-17 21:00 UTC
W50 Pazardzhik, Main Draw: Completed Match: Elizara Yaneva vs Julia Adams polymarket 51¢ $4k 09-17 07:00 UTC
M25 Zlatibor, Main Draw: Completed Match: Marko Knezevic vs Drazen Petrovic polymarket 98¢ $4k 09-17 07:00 UTC
Szczecin: Daniel Galan vs Nikolas Sanchez Izquierdo polymarket 56¢ $3k 09-17 15:00 UTC
M25 Zlatibor: Kristijan Juhas vs Tadija Radovanovic polymarket 97¢ $2k 09-17 07:00 UTC
Stearns vs Stephens — Sloane Stephens kalshi 39¢ $2k 09-17 21:00 UTC
Guadalajara Open Akron: Peyton Stearns vs Sloane Stephens polymarket 62¢ $2k 09-18 00:30 UTC
Lys vs Podoroska — Eva Lys kalshi 67¢ $2k 09-17 23:30 UTC
Avanesyan vs Charaeva — Alina Charaeva kalshi 44¢ $2k 09-17 19:20 UTC
Avanesyan vs Charaeva — Elina Avanesyan kalshi 56¢ $2k 09-17 19:20 UTC

The 20 most active of 58, 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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