TennisUPCOMING

Stale· updated 4m ago

National Bank Open: Lois Boisson vs Antonia Ruzic

Other · August 2, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0.00

Platform Prices — Lois Boisson

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
KalshiBest	2.33	43.0%	$0.43	---	Bet Here
Polymarket	2.20	45.5%	$0.46	+2.5pp	Bet Here

KalshiBest

$0.43

Odds

2.33

Implied

43.0%

Edge

---

Bet Here

Polymarket

$0.46

Odds

2.20

Implied

45.5%

Edge

+2.5pp

Bet Here

All Outcomes

Lois Boisson

Best: 45.5% on polymarket

▲+2.5%

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

45.5%

43.0%

Antonia Ruzic

Best: 55.5% on kalshi

▲+1.0%

Prediction market is 1.0% cheaper than sportsbooks. Consider buying on PM.

54.5%

55.5%

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.

Lois Boisson

cheapest single venue: kalshi at 0.430

Retail tier ($5k/venue)

$10.0K@ 0.604 avg

+23.18% vs cheapest single venue

kalshi$5.0K @ 0.490

polymarket$5.0K @ 0.717

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

Sharp tier ($25k/venue)

$30.0K@ 0.639 avg

+2.51% vs cheapest single venue

kalshi$25.0K @ 0.623

polymarket

Arbitrage Opportunity

+2.56%theoretical onlyPAPER

Stake split for $1,000 bankroll

Lois Boisson (kalshi, $441) — slippage 8.1% — eats into edge

Antonia Ruzic (polymarket, $559) — slippage 2.8% — eats into edge

Outcome	Platform	Odds	Stake	To win
Lois Boissonthin	kalshi	2.33	$441	$1026
Antonia Ruzicthin	polymarket	1.83	$559	$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 — Lois Boisson

Spread

2.5pp

polymarket at 45.5% vs kalshi at 43.0%

Expected Value

+5.81%

Per $1 staked at kalshi (2.33) if polymarket's price is fair.

Kelly Stake

4.4%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

polymarket

updated just now

Volume: —
24h Volume: —
Liquidity: $7.1K
Open Interest: —

Resolves: in 7d 11h

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

kalshi

updated just now

Volume: $5
24h Volume: $5
Liquidity: $0
Open Interest: $5

Resolves: in 14d 10h

Settlement Timeline

polymarketin 7d 11h · Aug 9, 2026, 6:00 PM
kalshiin 14d 10h · Aug 16, 2026, 5:40 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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