TennisLIVE

Stale· updated 4m ago

Hamburg European Open: Katarzyna Kawa vs Paula Badosa

Other · July 20, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0K

Platform Prices — Katarzyna Kawa

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
KalshiBest	2.86	35.0%	$0.35	---	Bet Here
Polymarket	2.53	39.5%	$0.40	+4.5pp	Bet Here

KalshiBest

$0.35

Odds

2.86

Implied

35.0%

Edge

---

Bet Here

Polymarket

$0.40

Odds

2.53

Implied

39.5%

Edge

+4.5pp

Bet Here

All Outcomes

Katarzyna Kawa

Best: 39.5% on polymarket

▲+4.5%

Prediction market is 4.5% cheaper than sportsbooks. Consider buying on PM.

35.0%

39.5%

Paula Badosa

Best: 62.0% on kalshi

▲+1.5%

Prediction market is 1.5% cheaper than sportsbooks. Consider buying on PM.

62.0%

60.5%

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.

Katarzyna Kawa

cheapest single venue: kalshi at 0.350

Retail tier ($5k/venue)

$10.0K@ 0.390 avg

+2.70% vs cheapest single venue

kalshi$5.0K @ 0.380

polymarket$5.0K @ 0.400

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

Sharp tier ($25k/venue)

$50.0K@ 0.403 avg

+1.77% vs cheapest single venue

kalshi$25.0K @ 0.396

polymarket

Arbitrage Opportunity

+4.71%theoretical onlyPAPER

Fillable up to $609

Katarzyna Kawa (kalshi, $367) — slippage 2.1% — eats into edge

Outcome	Platform	Odds	Stake	To win
Katarzyna Kawathin	kalshi	2.86	$367	$1047
Paula Badosa	polymarket	1.65	$634	$1047

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 — Katarzyna Kawa

Spread

4.5pp

polymarket at 39.5% vs kalshi at 35.0%

Expected Value

+12.86%

Per $1 staked at kalshi (2.86) if polymarket's price is fair.

Kelly Stake

6.9%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

kalshi

updated just now

Volume: $188.7K
24h Volume: $42.1K
Liquidity: $0
Open Interest: $135.4K

Resolves: in 12d 17h

polymarket

updated just now

Volume: $354.6K
24h Volume: $139.8K
Liquidity: $117.8K
Open Interest: $223.4K

Resolves: in 6d 17h

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

Settlement Timeline

polymarketin 6d 17h · Jul 28, 2026, 8:00 AM
kalshiin 12d 17h · Aug 3, 2026, 8:00 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 Kalshi Trade on Polymarket

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