TennisUPCOMING

Live· updated 20s ago

ITF Portoroz: Amarissa Kiara Toth vs Tilwith Di Girolami

Other · May 21, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0.0

Platform Prices — Amarissa Kiara Toth

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
PolymarketBest	1.29	77.5%	$0.78	---	Bet Here
KalshiBest	1.29	77.5%	$0.78	---	Bet Here

PolymarketBest

$0.78

Odds

1.29

Implied

77.5%

Edge

---

Bet Here

KalshiBest

$0.78

Odds

1.29

Implied

77.5%

Edge

---

Bet Here

All Outcomes

Amarissa Kiara Toth

Best: 77.5% on kalshi

▼0.0%

Prices are roughly equal across platforms.

77.5%

Tilwith Di Girolami

Best: 22.5% on polymarket

▲+0.5%

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

22.5%

22.0%

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.

Amarissa Kiara Toth

cheapest single venue: polymarket at 0.775

Retail tier ($5k/venue)

$10.0K@ 0.886 avg

+2.68% vs cheapest single venue

polymarket$5.0K @ 0.863

kalshi$5.0K @ 0.909

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

Sharp tier ($25k/venue)

$50.0K@ 0.898 avg

+4.05% vs cheapest single venue

polymarket$25.0K @ 0.863

Arbitrage Opportunity

+0.50%theoretical onlyPAPER

Stake split for $1,000 bankroll

Amarissa Kiara Toth (polymarket, $779) — slippage 2.4% — eats into edge

Tilwith Di Girolami (kalshi, $221) — slippage 83.3% > 10% cap

Outcome	Platform	Odds	Stake	To win
Amarissa Kiara Toththin	polymarket	1.29	$779	$1005
Tilwith Di Girolamithin	kalshi	4.54	$221	$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 — Amarissa Kiara Toth

Spread

0.0pp

kalshi at 77.5% vs polymarket at 77.5%

Expected Value

0.00%

Per $1 staked at polymarket (1.29) if kalshi's price is fair.

Kelly Stake

0.0%

EV is negative or marginal — Kelly says skip.

Platform Activity

polymarket

updated just now

Volume: $2
24h Volume: $2
Liquidity: $1.5K
Open Interest: $2

Resolves: in 7d 1h

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

kalshi

updated just now

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

Resolves: in 14d 1h

Settlement Timeline

polymarketin 7d 1h · May 28, 2026, 8:00 AM
kalshiin 14d 1h · Jun 4, 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 Polymarket Trade on Kalshi

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