TennisLIVE

Stale· updated 2m ago

ITF Brisbane: Zack Viiala vs Benjamin O'connell

Other · July 21, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

Platform Prices — Zachary Viiala

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
KalshiBest	1.83	54.5%	$0.54	+0.5pp	Bet Here
PolymarketBest	1.85	54.0%	$0.54	---	Bet Here

KalshiBest

$0.54

Odds

1.83

Implied

54.5%

Edge

+0.5pp

Bet Here

PolymarketBest

$0.54

Odds

1.85

Implied

54.0%

Edge

---

Bet Here

All Outcomes

Zachary Viiala

Best: 54.5% on kalshi

▲+0.5%

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

54.5%

54.0%

Benjamin O'Connell

Best: 46.0% on polymarket

▲+0.5%

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

45.5%

46.0%

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.

Zachary Viiala

cheapest single venue: polymarket at 0.540

Retail tier ($5k/venue)

$6.0K@ 0.569 avg

+0.61% vs cheapest single venue

polymarket$1.0K @ 0.566

kalshi$5.0K @ 0.570

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

Sharp tier ($25k/venue)

$26.0K@ 0.686 avg

+21.25% vs cheapest single venue

polymarket$1.0K @ 0.566

kalshi

Arbitrage Opportunity

+0.50%theoretical onlyPAPER

Fillable up to $729

Zachary Viiala (polymarket, $543) — slippage 2.9% — eats into edge

Outcome	Platform	Odds	Stake	To win
Zachary Viialathin	polymarket	1.85	$543	$1005
Benjamin O'Connellthin	kalshi	2.20	$457	$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 — Zachary Viiala

Spread

0.5pp

kalshi at 54.5% vs polymarket at 54.0%

Expected Value

+0.93%

Per $1 staked at polymarket (1.85) if kalshi's price is fair.

Kelly Stake

1.1%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

kalshi

updated just now

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

Resolves: in 14d 8h

polymarket

updated just now

Volume: —
24h Volume: —
Liquidity: $8.4K
Open Interest: —

Resolves: in 7d 6h

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

Settlement Timeline

polymarketin 7d 6h · Jul 29, 2026, 1:00 AM
kalshiin 14d 8h · Aug 5, 2026, 2:30 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 Kalshi Trade on Polymarket

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