TennisUPCOMING

Stale· updated 3m ago

Mubadala Citi DC Open: Martin Damm vs Ben Shelton

Other · July 27, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0.000000

Platform Prices — Martin Damm Jr

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
KalshiBest	3.23	31.0%	$0.31	---	Bet Here
Polymarket	2.70	37.0%	$0.37	+6.0pp	Bet Here

KalshiBest

$0.31

Odds

3.23

Implied

31.0%

Edge

---

Bet Here

Polymarket

$0.37

Odds

2.70

Implied

37.0%

Edge

+6.0pp

Bet Here

All Outcomes

Martin Damm Jr

Best: 37.0% on polymarket

▲+6.0%

Prediction market is 6.0% cheaper than sportsbooks. Consider buying on PM.

37.0%

31.0%

Ben Shelton

Best: 63.0% on polymarket

▲+2.0%

Prediction market is 2.0% cheaper than sportsbooks. Consider buying on PM.

63.0%

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.

Martin Damm Jr

cheapest single venue: kalshi at 0.310

Retail tier ($5k/venue)

$10.0K@ 0.733 avg

+3.40% vs cheapest single venue

kalshi$5.0K @ 0.709

polymarket$5.0K @ 0.757

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

Sharp tier ($25k/venue)

$30.0K@ 0.747 avg

+0.27% vs cheapest single venue

kalshi$25.0K @ 0.745

polymarket

Arbitrage Opportunity

+8.70%theoretical onlyPAPER

Fillable up to $374

Martin Damm Jr (kalshi, $337) — slippage 45.3% > 10% cap — fillable up to $126

Outcome	Platform	Odds	Stake	To win
Martin Damm Jrthin	kalshi	3.23	$337	$1087
Ben Sheltonthin	kalshi	1.64	$663	$1087

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 — Martin Damm Jr

Spread

6.0pp

polymarket at 37.0% vs kalshi at 31.0%

Expected Value

+19.35%

Per $1 staked at kalshi (3.23) if polymarket's price is fair.

Kelly Stake

8.7%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

polymarket

updated just now

Volume: $115
24h Volume: $115
Liquidity: $3.7K
Open Interest: $109

Resolves: in 7d 13h

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

kalshi

updated just now

Volume: $701
24h Volume: $548
Liquidity: $0
Open Interest: $701

Resolves: in 14d 14h

Settlement Timeline

polymarketin 7d 13h · Aug 3, 2026, 2:00 PM
kalshiin 14d 14h · Aug 10, 2026, 3:00 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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