MLB odds on Kalshi vs Polymarket
Baseball moneylines and run totals, Kalshi against Polymarket. Right now there are 72 open MLB markets — 72 on Kalshi, 0 on Polymarket — carrying $0 of volume in the last 24 hours.
Open MLB markets, by volume
| Market | Venue | Yes | 24h volume | Closes |
|---|---|---|---|---|
| Ethan Holliday: Debut Date — Before Nov 1, 2028 | kalshi | 25¢ | $0 | 11-01 03:59 UTC |
| Ethan Holliday: Debut Date — Before Aug 1, 2029 | kalshi | 50¢ | $0 | 08-01 03:59 UTC |
| Ethan Holliday: Debut Date — Before May 1, 2029 | kalshi | 36¢ | $0 | 05-01 03:59 UTC |
| Ethan Holliday: Debut Date — Before Nov 1, 2029 | kalshi | 69¢ | $0 | 11-01 03:59 UTC |
| Ethan Holliday: Debut Date — Before Aug 1, 2030 | kalshi | 77¢ | $0 | 08-01 03:59 UTC |
| Ethan Holliday: Debut Date — Before May 1, 2030 | kalshi | 75¢ | $0 | 05-01 03:59 UTC |
| Ethan Holliday: Debut Date — Before Nov 1, 2030 | kalshi | 81¢ | $0 | 11-01 03:59 UTC |
| Eduardo Quintero: Debut Date — Before Aug 1, 2027 | kalshi | 12¢ | $0 | 08-01 03:59 UTC |
| Eduardo Quintero: Debut Date — Before Nov 1, 2027 | kalshi | 23¢ | $0 | 11-01 03:59 UTC |
| Eduardo Quintero: Debut Date — Before Aug 1, 2028 | kalshi | 50¢ | $0 | 08-01 03:59 UTC |
| Eduardo Quintero: Debut Date — Before May 1, 2028 | kalshi | 35¢ | $0 | 05-01 03:59 UTC |
| Eduardo Quintero: Debut Date — Before Nov 1, 2028 | kalshi | 68¢ | $0 | 11-01 03:59 UTC |
| Eduardo Quintero: Debut Date — Before Aug 1, 2029 | kalshi | 81¢ | $0 | 08-01 03:59 UTC |
| Eduardo Quintero: Debut Date — Before May 1, 2029 | kalshi | 76¢ | $0 | 05-01 03:59 UTC |
| Eduardo Quintero: Debut Date — Before Nov 1, 2029 | kalshi | 85¢ | $0 | 11-01 03:59 UTC |
| Eli Willits: Debut Date — Before Aug 1, 2027 | kalshi | 17¢ | $0 | 08-01 03:59 UTC |
| Eli Willits: Debut Date — Before Nov 1, 2027 | kalshi | 30¢ | $0 | 11-01 03:59 UTC |
| Eli Willits: Debut Date — Before Aug 1, 2028 | kalshi | 54¢ | $0 | 08-01 03:59 UTC |
| Eli Willits: Debut Date — Before May 1, 2028 | kalshi | 39¢ | $0 | 05-01 03:59 UTC |
| Eli Willits: Debut Date — Before Nov 1, 2028 | kalshi | 68¢ | $0 | 11-01 03:59 UTC |
The 20 most active of 72, 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 MLB 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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