TennisUPCOMING

Stale· updated 5m ago

ITF Segrate: Mathys Domenc vs Simone Massellani

Other · July 21, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0.000000

Platform Prices — Mathys Domenc

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
KalshiBest	1.61	62.0%	$0.62	---	Bet Here
Polymarket	1.60	62.5%	$0.63	+0.5pp	Bet Here

KalshiBest

$0.62

Odds

1.61

Implied

62.0%

Edge

---

Bet Here

Polymarket

$0.63

Odds

1.60

Implied

62.5%

Edge

+0.5pp

Bet Here

All Outcomes

Mathys Domenc

Best: 62.5% on polymarket

▲+0.5%

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

62.5%

62.0%

Simone Massellani

Best: 37.5% on kalshi

▼0.0%

Prices are roughly equal across platforms.

37.5%

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.

Mathys Domenc

cheapest single venue: kalshi at 0.620

Retail tier ($5k/venue)

$6.0K@ 0.661 avg

+0.66% vs cheapest single venue

polymarket$1.0K @ 0.656

kalshi$5.0K @ 0.662

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

Sharp tier ($25k/venue)

$26.0K@ 0.802 avg

+22.21% vs cheapest single venue

polymarket$1.0K @ 0.656

kalshi

Arbitrage Opportunity

+0.50%theoretical onlyPAPER

Stake split for $1,000 bankroll

Mathys Domenc (kalshi, $623) — slippage 3.5% — eats into edge

Outcome	Platform	Odds	Stake	To win
Mathys Domencthin	kalshi	1.61	$623	$1005
Simone Massellanithin	polymarket	2.67	$377	$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 — Mathys Domenc

Spread

0.5pp

polymarket at 62.5% vs kalshi at 62.0%

Expected Value

+0.81%

Per $1 staked at kalshi (1.61) if polymarket's price is fair.

Kelly Stake

1.3%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

polymarket

updated just now

Volume: $85
24h Volume: $85
Liquidity: $2.6K
Open Interest: $85

Resolves: in 6d 20h

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

kalshi

updated just now

Volume: $37
24h Volume: $37
Liquidity: $0
Open Interest: $37

Resolves: in 13d 23h

Settlement Timeline

polymarketin 6d 20h · Jul 28, 2026, 8:00 AM
kalshiin 13d 23h · Aug 4, 2026, 11:30 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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