TennisUPCOMING

Stale· updated 4m ago

Athens Open: Marianne Argyrokastriti vs Lilli Tagger

Other · July 13, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0K

Platform Prices — Marianne Argyrokastriti

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
KalshiBest	15.38	6.5%	$0.07	---	Bet Here
Polymarket	11.11	9.0%	$0.09	+2.5pp	Bet Here

KalshiBest

$0.07

Odds

15.38

Implied

6.5%

Edge

---

Bet Here

Polymarket

$0.09

Odds

11.11

Implied

9.0%

Edge

+2.5pp

Bet Here

All Outcomes

Marianne Argyrokastriti

Best: 9.0% on polymarket

▲+2.5%

Prediction market is 2.5% cheaper than sportsbooks. Consider buying on PM.

9.0%

6.5%

Lilli Tagger

Best: 94.0% on kalshi

▲+3.0%

Prediction market is 3.0% cheaper than sportsbooks. Consider buying on PM.

91.0%

94.0%

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.

Marianne Argyrokastriti

cheapest single venue: kalshi at 0.065

Retail tier ($5k/venue)

$10.0K@ 0.578 avg

+18.22% vs cheapest single venue

kalshi$5.0K @ 0.489

polymarket$5.0K @ 0.667

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

Sharp tier ($25k/venue)

$30.0K@ 0.718 avg

+7.67% vs cheapest single venue

polymarket$5.0K @ 0.667

Arbitrage Opportunity

+2.56%theoretical onlyPAPER

Stake split for $1,000 bankroll

Marianne Argyrokastriti (kalshi, $67) — slippage 171.1% > 10% cap — fillable up to $0

Outcome	Platform	Odds	Stake	To win
Marianne Argyrokastritithin	kalshi	15.38	$67	$1026
Lilli Taggerthin	polymarket	1.10	$933	$1026

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 — Marianne Argyrokastriti

Spread

2.5pp

polymarket at 9.0% vs kalshi at 6.5%

Expected Value

+38.46%

Per $1 staked at kalshi (15.38) if polymarket's price is fair.

Kelly Stake

2.7%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

polymarket

updated just now

Volume: $14
24h Volume: $14
Liquidity: $1.9K
Open Interest: $14

Resolves: in 7d 14h

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

kalshi

updated just now

Volume: $4.7K
24h Volume: $4.7K
Liquidity: $0
Open Interest: $4.6K

Resolves: in 14d 14h

Settlement Timeline

polymarketin 7d 14h · Jul 20, 2026, 2:30 PM
kalshiin 14d 14h · Jul 27, 2026, 2:30 PM

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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