TennisUPCOMING

Stale· updated 5m ago

National Bank Open: Sho Shimabukuro vs Marin Cilic

Other · August 2, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0K

Platform Prices — Sho Shimabukuro

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
PolymarketBest	2.78	36.0%	$0.36	---	Bet Here
Kalshi	2.70	37.0%	$0.37	+1.0pp	Bet Here

PolymarketBest

$0.36

Odds

2.78

Implied

36.0%

Edge

---

Bet Here

Kalshi

$0.37

Odds

2.70

Implied

37.0%

Edge

+1.0pp

Bet Here

All Outcomes

Sho Shimabukuro

Best: 37.0% on kalshi

▲+1.0%

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

36.0%

37.0%

Marin Cilic

Best: 64.0% on polymarket

▲+0.5%

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

64.0%

63.5%

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.

Sho Shimabukuro

cheapest single venue: polymarket at 0.360

Retail tier ($5k/venue)

$10.0K@ 0.530 avg

+37.97% vs cheapest single venue

kalshi$5.0K @ 0.384

polymarket$5.0K @ 0.676

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

Sharp tier ($25k/venue)

$30.0K@ 0.521 avg

+6.32% vs cheapest single venue

kalshi$25.0K @ 0.490

polymarket

Arbitrage Opportunity

+0.50%theoretical onlyPAPER

Fillable up to $831

Sho Shimabukuro (polymarket, $362) — slippage 8.5% — eats into edge

Outcome	Platform	Odds	Stake	To win
Sho Shimabukurothin	polymarket	2.78	$362	$1005
Marin Cilicthin	kalshi	1.57	$638	$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 — Sho Shimabukuro

Spread

1.0pp

kalshi at 37.0% vs polymarket at 36.0%

Expected Value

+2.78%

Per $1 staked at polymarket (2.78) if kalshi's price is fair.

Kelly Stake

1.6%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

polymarket

updated just now

Volume: $30
24h Volume: $30
Liquidity: $5.0K
Open Interest: —

Resolves: in 7d 15h

Source: https://www.atptour.com/en/scores/current

kalshi

updated just now

Volume: $1.5K
24h Volume: $1.5K
Liquidity: $0
Open Interest: $1.5K

Resolves: in 14d 15h

Settlement Timeline

polymarketin 7d 15h · Aug 9, 2026, 10:00 PM
kalshiin 14d 15h · Aug 16, 2026, 10:00 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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