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Stale· updated 2m ago

ITF Brisbane: Benjamin O'connell vs Blake Ellis

Other · July 15, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0.000000

Platform Prices — Benjamin O'Connell

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
KalshiBest	7.14	14.0%	$0.14	---	Bet Here
Polymarket	5.88	17.0%	$0.17	+3.0pp	Bet Here

KalshiBest

$0.14

Odds

7.14

Implied

14.0%

Edge

---

Bet Here

Polymarket

$0.17

Odds

5.88

Implied

17.0%

Edge

+3.0pp

Bet Here

All Outcomes

Benjamin O'Connell

Best: 17.0% on polymarket

▲+3.0%

Prediction market is 3.0% cheaper than sportsbooks. Consider buying on PM.

14.0%

17.0%

Blake Ellis

Best: 86.0% on kalshi

▲+3.0%

Prediction market is 3.0% cheaper than sportsbooks. Consider buying on PM.

86.0%

83.0%

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.

Benjamin O'Connell

cheapest single venue: kalshi at 0.140

Retail tier ($5k/venue)

$5.0K@ 0.354 avg

+0.00% vs cheapest single venue

kalshi$5.0K @ 0.354

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

Sharp tier ($25k/venue)

$25.0K@ 0.680 avg

-0.00% vs cheapest single venue

kalshi$25.0K @ 0.680

Algo-trader tier — combines order-book depth and per-book stake limits at $25k each.

Whale tier (max known capacity)

Arbitrage Opportunity

+3.09%theoretical onlyPAPER

Fillable up to $225

Benjamin O'Connell (kalshi, $144) — slippage 30.6% > 10% cap — fillable up to $33

Outcome	Platform	Odds	Stake	To win
Benjamin O'Connellthin	kalshi	7.14	$144	$1031
Blake Ellisthin	polymarket	1.21	$856	$1031

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 — Benjamin O'Connell

Spread

3.0pp

polymarket at 17.0% vs kalshi at 14.0%

Expected Value

+21.43%

Per $1 staked at kalshi (7.14) if polymarket's price is fair.

Kelly Stake

3.5%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

kalshi

updated just now

Volume: $584
24h Volume: $510
Liquidity: $0
Open Interest: $526

Resolves: in 14d 0h

polymarket

updated just now

Volume: $42
24h Volume: $42
Liquidity: $6.1K
Open Interest: $19

Resolves: in 7d 0h

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

Settlement Timeline

polymarketin 7d 0h · Jul 23, 2026, 1:00 AM
kalshiin 14d 0h · Jul 30, 2026, 1:00 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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