TennisUPCOMING

Live· updated 28s ago

Wimbledon, Qualification ATP: Roman Safiullin vs Kimmer Coppejans

Tennis · June 23, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0K

Platform Prices — Roman Safiullin

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
KalshiBest	1.25	80.0%	$0.80	---	Bet Here
Polymarket	1.23	81.0%	$0.81	+1.0pp	Bet Here

KalshiBest

$0.80

Odds

1.25

Implied

80.0%

Edge

---

Bet Here

Polymarket

$0.81

Odds

1.23

Implied

81.0%

Edge

+1.0pp

Bet Here

All Outcomes

Roman Safiullin

Best: 81.0% on polymarket

▲+1.0%

Prediction market is 1.0% cheaper than sportsbooks. Consider buying on PM.

80.0%

81.0%

Kimmer Coppejans

Best: 22.0% on kalshi

▲+3.0%

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

22.0%

19.0%

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.

Roman Safiullin

cheapest single venue: kalshi at 0.800

Retail tier ($5k/venue)

$10.0K@ 0.913 avg

+5.68% vs cheapest single venue

kalshi$5.0K @ 0.864

polymarket$5.0K @ 0.962

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

Sharp tier ($25k/venue)

$30.0K@ 0.907 avg

+1.23% vs cheapest single venue

kalshi$25.0K @ 0.896

polymarket

Arbitrage Opportunity

+1.01%theoretical onlyPAPER

Stake split for $1,000 bankroll

Kimmer Coppejans (polymarket, $192) — slippage 102.7% > 10% cap — fillable up to $6

Outcome	Platform	Odds	Stake	To win
Roman Safiullinthin	kalshi	1.25	$808	$1010
Kimmer Coppejansthin	polymarket	5.26	$192	$1010

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 — Roman Safiullin

Spread

1.0pp

polymarket at 81.0% vs kalshi at 80.0%

Expected Value

+1.25%

Per $1 staked at kalshi (1.25) if polymarket's price is fair.

Kelly Stake

5.0%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

kalshi

updated just now

Volume: $1.6K
24h Volume: $1.6K
Liquidity: $0
Open Interest: $544

Resolves: in 14d 13h

polymarket

updated just now

Volume: —
24h Volume: —
Liquidity: $11.8K
Open Interest: —

Resolves: in 8d 14h

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

Settlement Timeline

polymarketin 8d 14h · Jul 1, 2026, 10:00 AM
kalshiin 14d 13h · Jul 7, 2026, 9:00 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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