TennisUPCOMING

Live· updated 33s ago

ITF Kassel: Arian Barbic vs Matthew William Donald

Other · July 8, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

Platform Prices — Arian Barbic

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
KalshiBest	50.00	2.0%	$0.02	---	Bet Here
Polymarket	18.18	5.5%	$0.06	+3.5pp	Bet Here

KalshiBest

$0.02

Odds

50.00

Implied

2.0%

Edge

---

Bet Here

Polymarket

$0.06

Odds

18.18

Implied

5.5%

Edge

+3.5pp

Bet Here

All Outcomes

Arian Barbic

Best: 5.5% on polymarket

▲+3.5%

Prediction market is 3.5% cheaper than sportsbooks. Consider buying on PM.

5.5%

2.0%

Matthew William Donald

Best: 95.0% on kalshi

▲+0.5%

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

94.5%

95.0%

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.

Arian Barbic

cheapest single venue: kalshi at 0.020

Retail tier ($5k/venue)

$5.0K@ 0.791 avg

+0.00% vs cheapest single venue

kalshi$5.0K @ 0.791

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

Sharp tier ($25k/venue)

$25.0K@ 0.892 avg

-0.00% vs cheapest single venue

kalshi$25.0K @ 0.892

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

Whale tier (max known capacity)

Arbitrage Opportunity

+3.63%theoretical onlyPAPER

Fillable up to $463

Arian Barbic (kalshi, $21) — slippage 1969.2% > 10% cap — fillable up to $10

Outcome	Platform	Odds	Stake	To win
Arian Barbicthin	kalshi	50.00	$21	$1035
Matthew William Donaldthin	polymarket	1.06	$979	$1036

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 — Arian Barbic

Spread

3.5pp

polymarket at 5.5% vs kalshi at 2.0%

Expected Value

+175.00%

Per $1 staked at kalshi (50.00) if polymarket's price is fair.

Kelly Stake

3.6%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

polymarket

updated just now

Volume: —
24h Volume: —
Liquidity: $1.3K
Open Interest: —

Resolves: in 7d 8h

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

kalshi

updated just now

Volume: $30
24h Volume: $30
Liquidity: $0
Open Interest: $20

Resolves: in 14d 8h

Settlement Timeline

polymarketin 7d 8h · Jul 15, 2026, 10:00 AM
kalshiin 14d 8h · Jul 22, 2026, 10:00 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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