Market comparison
European Open: Tallon Griekspoor vs Jiri Lehecka
2 venues · 17 outcome rows · 1 comparable lines · event identity linked · 0 verified parity · active
Kalshi
Open venue ↗2 outcomes · $68K reported volume
Observed 1m ago
Recorded venue end date: Nov 6, 2026
Polymarket
Open venue ↗16 outcomes · $8K reported volume
Observed 2m ago
Recorded venue end date: Oct 30, 2026
Known rule differences between venues
- Postponement: Kalshi resolves to a fair price if the game does not start within 48 hours of the scheduled time (tennis: not finished within two weeks); Polymarket stays open until the game is played and resolves 50-50 only if it is cancelled with no make-up (UFC/tennis: ~14 days).
- Ties and draws in two-way sports (NFL, college football, UFC no-contest): both venues pay 50/50.
- Soccer: both settle on 90 minutes plus stoppage time; extra time and penalties excluded.
- Tennis: Kalshi requires a ball to be played and pays the winner; Polymarket pays the player who advances, including on retirement. A pre-match walkover is a fair price on Kalshi, 50-50 on Polymarket.
- UFC: Kalshi ignores result changes after expiry; Polymarket follows the official UFC result.
- Polymarket two-way moneylines are one contract priced on the first-named side; the other side is its complement (recorded as a derived relation, not a link).
A shared identity alone does not make a price difference executable.
| Outcome | Kalshi | Polymarket | Difference |
|---|---|---|---|
Griekspoor Partial parityPayoffs match in ordinary outcomes; see the rule differences above. | 1.5 pp | ||
Completed Match Not alignedNo persisted outcome identity connects these venue contracts. | — | — | |
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5 Not alignedNo persisted outcome identity connects these venue contracts. | — | 89.5% Bid 82.0% · Ask 97.0% European Open: Tallon Griekspoor vs Jiri Lehecka Set 1 O/U 8.5 Open Polymarket ↗ | — |
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5 Not alignedNo persisted outcome identity connects these venue contracts. | — | 67.0% Bid 61.0% · Ask 73.0% European Open: Tallon Griekspoor vs Jiri Lehecka Set 1 O/U 9.5 Open Polymarket ↗ | — |
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5 Not alignedNo persisted outcome identity connects these venue contracts. | — | 62.0% Bid 52.0% · Ask 72.0% European Open: Tallon Griekspoor vs Jiri Lehecka Match O/U 21.5 Open Polymarket ↗ | — |
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5 Not alignedNo persisted outcome identity connects these venue contracts. | — | 59.0% Bid 57.0% · Ask 61.0% European Open: Tallon Griekspoor vs Jiri Lehecka Match O/U 22.5 Open Polymarket ↗ | — |
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5 Not alignedNo persisted outcome identity connects these venue contracts. | — | 49.5% Bid 48.0% · Ask 51.0% European Open: Tallon Griekspoor vs Jiri Lehecka Match O/U 23.5 Open Polymarket ↗ | — |
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5 Not alignedNo persisted outcome identity connects these venue contracts. | — | 48.0% Bid — · Ask 96.0% European Open: Tallon Griekspoor vs Jiri Lehecka Set 2 O/U 9.5 Open Polymarket ↗ | — |
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5 Not alignedNo persisted outcome identity connects these venue contracts. | — | 48.0% Bid — · Ask 96.0% European Open: Tallon Griekspoor vs Jiri Lehecka Set 2 O/U 8.5 Open Polymarket ↗ | — |
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5 Not alignedNo persisted outcome identity connects these venue contracts. | — | 48.0% Bid — · Ask 96.0% European Open: Tallon Griekspoor vs Jiri Lehecka Set 2 O/U 10.5 Open Polymarket ↗ | — |
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5 Not alignedNo persisted outcome identity connects these venue contracts. | — | 42.0% Bid 41.0% · Ask 43.0% European Open: Tallon Griekspoor vs Jiri Lehecka Total Sets: O/U 2.5 Open Polymarket ↗ | — |
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5 Not alignedNo persisted outcome identity connects these venue contracts. | — | 41.5% Bid 40.0% · Ask 43.0% European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5 Open Polymarket ↗ | — |
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5 Not alignedNo persisted outcome identity connects these venue contracts. | — | 37.5% Bid 37.0% · Ask 38.0% European Open: Tallon Griekspoor vs Jiri Lehecka Game Spread +/-3.5 Open Polymarket ↗ | — |
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5 Not alignedNo persisted outcome identity connects these venue contracts. | — | 37.5% Bid 36.0% · Ask 39.0% European Open: Tallon Griekspoor vs Jiri Lehecka Set 1 O/U 10.5 Open Polymarket ↗ | — |
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5 Not alignedNo persisted outcome identity connects these venue contracts. | — | 33.0% Bid 30.0% · Ask 36.0% European Open: Tallon Griekspoor vs Jiri Lehecka Set 2 Winner Open Polymarket ↗ | — |
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5 Not alignedNo persisted outcome identity connects these venue contracts. | — | 32.5% Bid 32.0% · Ask 33.0% European Open: Tallon Griekspoor vs Jiri Lehecka Set 1 Winner Open Polymarket ↗ | — |
Jiri Lehecka Not alignedNo persisted outcome identity connects these venue contracts. | — | — |
Griekspoor
Partial parityPayoffs match in ordinary outcomes; see the rule differences above.
Kalshi
Polymarket
Price difference 1.5 pp
Completed Match
Not alignedNo persisted outcome identity connects these venue contracts.
Kalshi
—
Polymarket
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
Not alignedNo persisted outcome identity connects these venue contracts.
Kalshi
—
Polymarket
89.5%
Bid 82.0% · Ask 97.0%
European Open: Tallon Griekspoor vs Jiri Lehecka Set 1 O/U 8.5
Open Polymarket ↗European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
Not alignedNo persisted outcome identity connects these venue contracts.
Kalshi
—
Polymarket
67.0%
Bid 61.0% · Ask 73.0%
European Open: Tallon Griekspoor vs Jiri Lehecka Set 1 O/U 9.5
Open Polymarket ↗European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
Not alignedNo persisted outcome identity connects these venue contracts.
Kalshi
—
Polymarket
62.0%
Bid 52.0% · Ask 72.0%
European Open: Tallon Griekspoor vs Jiri Lehecka Match O/U 21.5
Open Polymarket ↗European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
Not alignedNo persisted outcome identity connects these venue contracts.
Kalshi
—
Polymarket
59.0%
Bid 57.0% · Ask 61.0%
European Open: Tallon Griekspoor vs Jiri Lehecka Match O/U 22.5
Open Polymarket ↗European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
Not alignedNo persisted outcome identity connects these venue contracts.
Kalshi
—
Polymarket
49.5%
Bid 48.0% · Ask 51.0%
European Open: Tallon Griekspoor vs Jiri Lehecka Match O/U 23.5
Open Polymarket ↗European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
Not alignedNo persisted outcome identity connects these venue contracts.
Kalshi
—
Polymarket
48.0%
Bid — · Ask 96.0%
European Open: Tallon Griekspoor vs Jiri Lehecka Set 2 O/U 9.5
Open Polymarket ↗European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
Not alignedNo persisted outcome identity connects these venue contracts.
Kalshi
—
Polymarket
48.0%
Bid — · Ask 96.0%
European Open: Tallon Griekspoor vs Jiri Lehecka Set 2 O/U 8.5
Open Polymarket ↗European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
Not alignedNo persisted outcome identity connects these venue contracts.
Kalshi
—
Polymarket
48.0%
Bid — · Ask 96.0%
European Open: Tallon Griekspoor vs Jiri Lehecka Set 2 O/U 10.5
Open Polymarket ↗European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
Not alignedNo persisted outcome identity connects these venue contracts.
Kalshi
—
Polymarket
42.0%
Bid 41.0% · Ask 43.0%
European Open: Tallon Griekspoor vs Jiri Lehecka Total Sets: O/U 2.5
Open Polymarket ↗European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
Not alignedNo persisted outcome identity connects these venue contracts.
Kalshi
—
Polymarket
41.5%
Bid 40.0% · Ask 43.0%
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
Open Polymarket ↗European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
Not alignedNo persisted outcome identity connects these venue contracts.
Kalshi
—
Polymarket
37.5%
Bid 37.0% · Ask 38.0%
European Open: Tallon Griekspoor vs Jiri Lehecka Game Spread +/-3.5
Open Polymarket ↗European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
Not alignedNo persisted outcome identity connects these venue contracts.
Kalshi
—
Polymarket
37.5%
Bid 36.0% · Ask 39.0%
European Open: Tallon Griekspoor vs Jiri Lehecka Set 1 O/U 10.5
Open Polymarket ↗European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
Not alignedNo persisted outcome identity connects these venue contracts.
Kalshi
—
Polymarket
33.0%
Bid 30.0% · Ask 36.0%
European Open: Tallon Griekspoor vs Jiri Lehecka Set 2 Winner
Open Polymarket ↗European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
Not alignedNo persisted outcome identity connects these venue contracts.
Kalshi
—
Polymarket
32.5%
Bid 32.0% · Ask 33.0%
European Open: Tallon Griekspoor vs Jiri Lehecka Set 1 Winner
Open Polymarket ↗Jiri Lehecka
Not alignedNo persisted outcome identity connects these venue contracts.
Kalshi
Polymarket
—
Prices are shown as percentages of a $1 payout. “pp” means percentage points. A dash means data is unavailable.