TennisUPCOMING

Stale· updated 3m ago

National Bank Open: Benjamin Bonzi vs Yannick Hanfmann

Other · August 2, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0K

Platform Prices — Benjamin Bonzi

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
KalshiBest	2.56	39.0%	$0.39	---	Bet Here
Polymarket	2.53	39.5%	$0.40	+0.5pp	Bet Here

KalshiBest

$0.39

Odds

2.56

Implied

39.0%

Edge

---

Bet Here

Polymarket

$0.40

Odds

2.53

Implied

39.5%

Edge

+0.5pp

Bet Here

All Outcomes

Benjamin Bonzi

Best: 39.5% on polymarket

▲+0.5%

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

39.5%

39.0%

Yannick Hanfmann

Best: 61.0% on kalshi

▲+0.5%

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

60.5%

61.0%

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 Bonzi

cheapest single venue: kalshi at 0.390

Retail tier ($5k/venue)

$10.0K@ 0.578 avg

+35.35% vs cheapest single venue

kalshi$5.0K @ 0.427

polymarket$5.0K @ 0.729

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

Sharp tier ($25k/venue)

$30.0K@ 0.571 avg

+5.88% vs cheapest single venue

kalshi$25.0K @ 0.539

polymarket

Arbitrage Opportunity

+0.50%theoretical onlyPAPER

Fillable up to $449

Benjamin Bonzi (kalshi, $392) — slippage 4.5% — eats into edge

Outcome	Platform	Odds	Stake	To win
Benjamin Bonzithin	kalshi	2.56	$392	$1005
Yannick Hanfmannthin	polymarket	1.65	$608	$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 — Benjamin Bonzi

Spread

0.5pp

polymarket at 39.5% vs kalshi at 39.0%

Expected Value

+1.28%

Per $1 staked at kalshi (2.56) if polymarket's price is fair.

Kelly Stake

0.8%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

polymarket

updated just now

Volume: $52
24h Volume: $52
Liquidity: $4.7K
Open Interest: —

Resolves: in 7d 16h

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

kalshi

updated just now

Volume: $1.2K
24h Volume: $1.1K
Liquidity: $0
Open Interest: $1.2K

Resolves: in 14d 16h

Settlement Timeline

polymarketin 7d 16h · Aug 9, 2026, 11:30 PM
kalshiin 14d 16h · Aug 16, 2026, 11:10 PM

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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