TennisUPCOMING

Live· updated 26s ago

Swiss Open: Stefanos Tsitsipas vs Ignacio Buse

Other · July 12, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0K

Platform Prices — Stefanos Tsitsipas

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
KalshiBest	2.13	47.0%	$0.47	---	Bet Here
Polymarket	2.06	48.5%	$0.49	+1.5pp	Bet Here

KalshiBest

$0.47

Odds

2.13

Implied

47.0%

Edge

---

Bet Here

Polymarket

$0.49

Odds

2.06

Implied

48.5%

Edge

+1.5pp

Bet Here

All Outcomes

Stefanos Tsitsipas

Best: 48.5% on polymarket

▲+1.5%

Prediction market is 1.5% cheaper than sportsbooks. Consider buying on PM.

47.0%

48.5%

Ignacio Buse

Best: 54.0% on kalshi

▲+2.5%

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

54.0%

51.5%

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.

Stefanos Tsitsipas

cheapest single venue: kalshi at 0.470

Retail tier ($5k/venue)

$10.0K@ 0.564 avg

+16.93% vs cheapest single venue

kalshi$5.0K @ 0.483

polymarket$5.0K @ 0.646

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

Sharp tier ($25k/venue)

$30.0K@ 0.700 avg

+8.31% vs cheapest single venue

polymarket$5.0K @ 0.646

Arbitrage Opportunity

+1.52%theoretical onlyPAPER

Stake split for $1,000 bankroll

Ignacio Buse (polymarket, $523) — slippage 2.5% — eats into edge

Outcome	Platform	Odds	Stake	To win
Stefanos Tsitsipasthin	kalshi	2.13	$477	$1015
Ignacio Busethin	polymarket	1.94	$523	$1015

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 — Stefanos Tsitsipas

Spread

1.5pp

polymarket at 48.5% vs kalshi at 47.0%

Expected Value

+3.19%

Per $1 staked at kalshi (2.13) if polymarket's price is fair.

Kelly Stake

2.8%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

kalshi

updated just now

Volume: $4.7K
24h Volume: $4.4K
Liquidity: $0
Open Interest: $4.6K

Resolves: in 14d 7h

polymarket

updated just now

Volume: $478
24h Volume: $478
Liquidity: $7.3K
Open Interest: $56

Resolves: in 8d 7h

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

Settlement Timeline

polymarketin 8d 7h · Jul 20, 2026, 8:00 AM
kalshiin 14d 7h · Jul 26, 2026, 8:00 AM

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 Kalshi Trade on Polymarket

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