TennisUPCOMING

Stale· updated 2m ago

ITF Granby: Sara Saito vs Sakura Hosogi

Other · July 18, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0.0000000000000

Platform Prices — Sara Saito

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
PolymarketBest	1.94	51.5%	$0.52	---	Bet Here
Kalshi	1.75	57.0%	$0.57	+5.5pp	Bet Here

PolymarketBest

$0.52

Odds

1.94

Implied

51.5%

Edge

---

Bet Here

Kalshi

$0.57

Odds

1.75

Implied

57.0%

Edge

+5.5pp

Bet Here

All Outcomes

Sara Saito

Best: 57.0% on kalshi

▲+5.5%

Prediction market is 5.5% cheaper than sportsbooks. Consider buying on PM.

51.5%

57.0%

Sakura Hosogi

Best: 48.5% on polymarket

▲+4.5%

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

48.5%

44.0%

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.

Sara Saito

cheapest single venue: polymarket at 0.515

Retail tier ($5k/venue)

$10.0K@ 0.608 avg

+1.03% vs cheapest single venue

kalshi$5.0K @ 0.602

polymarket$5.0K @ 0.614

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

Sharp tier ($25k/venue)

$30.0K@ 0.687 avg

+11.83% vs cheapest single venue

polymarket$5.0K @ 0.614

kalshi

Arbitrage Opportunity

+4.71%theoretical onlyPAPER

Stake split for $1,000 bankroll

Sara Saito (polymarket, $539) — slippage 7.1% — eats into edge

Outcome	Platform	Odds	Stake	To win
Sara Saitothin	polymarket	1.94	$539	$1047
Sakura Hosogithin	kalshi	2.27	$461	$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 — Sara Saito

Spread

5.5pp

kalshi at 57.0% vs polymarket at 51.5%

Expected Value

+10.68%

Per $1 staked at polymarket (1.94) if kalshi's price is fair.

Kelly Stake

11.3%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

polymarket

updated just now

Volume: —
24h Volume: —
Liquidity: $3.2K
Open Interest: —

Resolves: in 7d 9h

Source: https://www.itftennis.com/en/tournament-calendar/

kalshi

updated just now

Volume: $907
24h Volume: $907
Liquidity: $0
Open Interest: $907

Resolves: in 14d 9h

Settlement Timeline

polymarketin 7d 9h · Jul 25, 2026, 4:00 PM
kalshiin 14d 9h · Aug 1, 2026, 4:00 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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