TennisUPCOMING

Live· updated 1m ago

Paris: Madison Keys vs Diane Parry

Other · May 17, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0K

Platform Prices — Madison Keys

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
PolymarketBest	1.34	74.5%	$0.75	---	Bet Here
KalshiBest	1.34	74.5%	$0.75	---	Bet Here

PolymarketBest

$0.75

Odds

1.34

Implied

74.5%

Edge

---

Bet Here

KalshiBest

$0.75

Odds

1.34

Implied

74.5%

Edge

---

Bet Here

All Outcomes

Madison Keys

Best: 74.5% on kalshi

▼0.0%

Prices are roughly equal across platforms.

74.5%

Diane Parry

Best: 25.5% on polymarket

▲+0.5%

Prediction market is 0.5% cheaper than sportsbooks. Consider buying on PM.

25.5%

25.0%

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.

Madison Keys

cheapest single venue: polymarket at 0.745

Retail tier ($5k/venue)

$10.0K@ 0.765 avg

+0.60% vs cheapest single venue

kalshi$5.0K @ 0.760

polymarket$5.0K @ 0.769

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

Sharp tier ($25k/venue)

$50.0K@ 0.776 avg

+0.87% vs cheapest single venue

polymarket$25.0K @ 0.769

kalshi

Arbitrage Opportunity

+0.50%theoretical onlyPAPER

Stake split for $1,000 bankroll

Diane Parry (kalshi, $251) — slippage 4.6% — eats into edge

Outcome	Platform	Odds	Stake	To win
Madison Keysthin	polymarket	1.34	$749	$1005
Diane Parrythin	kalshi	4.00	$251	$1005

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 — Madison Keys

Spread

0.0pp

kalshi at 74.5% vs polymarket at 74.5%

Expected Value

+0.00%

Per $1 staked at polymarket (1.34) if kalshi's price is fair.

Kelly Stake

0.0%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

polymarket

updated just now

Volume: $19
24h Volume: $19
Liquidity: $10.6K
Open Interest: $74

Resolves: in 7d 9h

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

kalshi

updated just now

Volume: $2.8K
24h Volume: $2.8K
Liquidity: $0
Open Interest: $2.8K

Resolves: in 14d 9h

Settlement Timeline

polymarketin 7d 9h · May 24, 2026, 12:15 PM
kalshiin 14d 9h · May 31, 2026, 12:15 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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