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Hamburg European Open, Qualification: Eva Vedder vs Mona Barthel

Other · July 20, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0K

Platform Prices — Eva Vedder

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
KalshiBest	1.59	63.0%	$0.63	---	Bet Here
Polymarket	1.42	70.5%	$0.71	+7.5pp	Bet Here

KalshiBest

$0.63

Odds

1.59

Implied

63.0%

Edge

---

Bet Here

Polymarket

$0.71

Odds

1.42

Implied

70.5%

Edge

+7.5pp

Bet Here

All Outcomes

Eva Vedder

Best: 70.5% on polymarket

▲+7.5%

Prediction market is 7.5% cheaper than sportsbooks. Consider buying on PM.

70.5%

63.0%

Mona Barthel

Best: 40.0% on kalshi

▲+10.5%

Prediction market is 10.5% cheaper than sportsbooks. Consider buying on PM.

29.5%

40.0%

Aggregate liquidity

across every venue · the only place this number exists

For each outcome, the total fillable capacity if you split across every venue (Polymarket order-book depth + Kalshi order-book depth + Pinnacle / Bet365 / DraftKings stake limits). A whale can't deploy $50k on Polymarket alone without moving the price — but the same $50k splits cleanly across 4 venues at a much tighter aggregate fill price. That's what this panel shows.

Eva Vedder

cheapest single venue: kalshi at 0.630

Retail tier ($5k/venue)

$10.0K@ 0.592 avg

+0.25% vs cheapest single venue

kalshi$5.0K @ 0.590

polymarket$5.0K @ 0.593

What you can deploy retail-sized across every venue without moving a single market.

Sharp tier ($25k/venue)

$50.0K@ 0.592 avg

+0.34% vs cheapest single venue

kalshi$25.0K @ 0.590

polymarket

Arbitrage Opportunity

+8.11%theoretical onlyPAPER

Stake split for $1,000 bankroll

Mona Barthel (polymarket, $319) — slippage 2.9% — eats into edge

Outcome	Platform	Odds	Stake	To win
Eva Vedderthin	kalshi	1.59	$681	$1081
Mona Barthel	polymarket	3.39	$319	$1081

Stake the listed amount on each outcome at the matching platform. Whichever outcome wins, the payout covers the full bankroll plus the margin shown. Verify prices before placing — odds drift quickly.

Cross-Platform Edge — Eva Vedder

Spread

7.5pp

polymarket at 70.5% vs kalshi at 63.0%

Expected Value

+11.90%

Per $1 staked at kalshi (1.59) if polymarket's price is fair.

Kelly Stake

20.3%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

polymarket

updated just now

Volume: $43.1K
24h Volume: $43.1K
Liquidity: $440.7K
Open Interest: $29.3K

Resolves: in 6d 21h

Source: https://www.wtatennis.com/scores

kalshi

updated just now

Volume: $224.0K
24h Volume: $213.1K
Liquidity: $0
Open Interest: $134.8K

Resolves: in 13d 21h

Settlement Timeline

polymarketin 6d 21h · Jul 27, 2026, 9:30 AM
kalshiin 13d 21h · Aug 3, 2026, 9:10 AM

Capital on each platform stays locked until that market settles. When platforms resolve at different times the earlier one frees up bankroll for the next opportunity.

Price History

Illustrative preview · historical tracking coming soon

Trade This Market

Trade on Polymarket Trade on Kalshi

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