Guangzhou Open: Harriet Dart vs Janice Tjen odds, Oct 28: Kalshi vs Polymarket
Janice Tjen 68% on Kalshi, 69% on Polymarket. Both exchanges' prices for every outcome of Guangzhou Open: Harriet Dart vs Janice Tjen, Oct 28, $638 traded in 24 hours, updated every 45 seconds.
Wed, Oct 28, 2026, 4:00 AM ET · WTA tennis matches · $638 traded in 24h across both venues
Janice Tjen: Kalshi $0.68 vs Polymarket $0.69, −$0.01
Mid prices, in dollars on a contract that pays $1 if it happens: $0.68 is a 68% chance. The gap is Kalshi minus Polymarket.
Two separate exchanges, two accounts. Links may carry a referral code, which never changes what is shown. Disclosures.
All outcomes
| Outcome | Kalshi bid / ask | Polymarket bid / ask | Gap, + = Kalshi higher |
|---|---|---|---|
| Harriet Dart | $0.31 / $0.33 | $0.31 / $0.32 | +$0.01 |
| Janice Tjen | $0.67 / $0.69 | $0.68 / $0.69 | −$0.01 |
Price history, last 3 days
How this is matched
Games are matched across the two exchanges by league, team codes and date. Polymarket prices come from its live order book, Kalshi from its public API. Refreshed every 45 seconds.
What this is not
Read-only. Nothing here places or routes orders and nothing is advice. Fees, slippage and the time it takes to move money between venues are not in these numbers.