The Prediction Markets

Market comparison

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger

2 venues · 17 outcome rows · 1 comparable lines · event identity linked · 0 verified parity · active

Polymarket

Open venue ↗

16 outcomes · $3K reported volume

Observed 1m ago

Recorded venue end date: Oct 31, 2026

Kalshi

Open venue ↗

2 outcomes · $2K reported volume

Observed 1m ago

Recorded venue end date: Nov 7, 2026

Check settlement rules before comparing contracts. Matched outcomes may settle differently. These venues also report end dates more than 48 hours apart; event identity does not mean the contracts close or settle together. These are stored prices; record update times do not certify live quotes. Differences exclude fees and available size.

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.

Marozsan

Partial parity

Payoffs match in ordinary outcomes; see the rule differences above.

Polymarket

81.5%

Bid 81.0% · Ask 82.0%

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger

Open Polymarket ↗

Kalshi

82.0%

Bid 81.0% · Ask 83.0%

Fabian Marozsan

Open Kalshi ↗

Price difference 0.5 pp

Completed Match

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.5%

Bid 1.0% · Ask 100.0%

Completed Match

Open Polymarket ↗

Kalshi

—

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set Handicap +/-1.5

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

76.0%

Bid 75.0% · Ask 77.0%

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set 1 Winner

Open Polymarket ↗

Kalshi

—

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set Handicap +/-1.5

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

69.5%

Bid 64.0% · Ask 75.0%

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set 1 O/U 8.5

Open Polymarket ↗

Kalshi

—

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set Handicap +/-1.5

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

61.0%

Bid 60.0% · Ask 62.0%

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set Handicap +/-1.5

Open Polymarket ↗

Kalshi

—

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set Handicap +/-1.5

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

50.0%

Bid — · Ask 100.0%

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set 2 Winner

Open Polymarket ↗

Kalshi

—

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set Handicap +/-1.5

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

48.0%

Bid — · Ask 96.0%

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set 2 O/U 8.5

Open Polymarket ↗

Kalshi

—

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set Handicap +/-1.5

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

48.0%

Bid — · Ask 96.0%

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set 2 O/U 10.5

Open Polymarket ↗

Kalshi

—

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set Handicap +/-1.5

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

48.0%

Bid — · Ask 96.0%

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set 2 O/U 9.5

Open Polymarket ↗

Kalshi

—

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set Handicap +/-1.5

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

47.0%

Bid 41.0% · Ask 53.0%

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set 1 O/U 9.5

Open Polymarket ↗

Kalshi

—

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set Handicap +/-1.5

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

43.5%

Bid 42.0% · Ask 45.0%

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Match O/U 21.5

Open Polymarket ↗

Kalshi

—

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set Handicap +/-1.5

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

39.5%

Bid 38.0% · Ask 41.0%

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Game Spread +/-5.5

Open Polymarket ↗

Kalshi

—

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set Handicap +/-1.5

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

34.0%

Bid 1.0% · Ask 67.0%

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Match O/U 22.5

Open Polymarket ↗

Kalshi

—

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set Handicap +/-1.5

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

34.0%

Bid 1.0% · Ask 67.0%

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Match O/U 23.5

Open Polymarket ↗

Kalshi

—

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set Handicap +/-1.5

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

29.0%

Bid 28.0% · Ask 30.0%

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Total Sets: O/U 2.5

Open Polymarket ↗

Kalshi

—

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set Handicap +/-1.5

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

26.5%

Bid 23.0% · Ask 30.0%

Erste Bank Open, Qualification: Fabian Marozsan vs Sebastian Sorger Set 1 O/U 10.5

Open Polymarket ↗

Kalshi

—

Sebastian Sorger

Not aligned

No persisted outcome identity connects these venue contracts.

Polymarket

—

Kalshi

17.0%

Bid 16.0% · Ask 17.0%

Sebastian Sorger

Open Kalshi ↗

Prices are shown as percentages of a $1 payout. “pp” means percentage points. A dash means data is unavailable.

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