TennisUPCOMING

Live· updated 1m ago

ITF Aix-Les-Bains: Madison Sieg vs Yaroslava Bartashevich

Other · July 1, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

Platform Prices — Madison Sieg

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
PolymarketBest	1.67	60.0%	$0.60	---	Bet Here
Kalshi	1.65	60.5%	$0.61	+0.5pp	Bet Here

PolymarketBest

$0.60

Odds

1.67

Implied

60.0%

Edge

---

Bet Here

Kalshi

$0.61

Odds

1.65

Implied

60.5%

Edge

+0.5pp

Bet Here

All Outcomes

Madison Sieg

Best: 60.5% on kalshi

▲+0.5%

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

60.0%

60.5%

Yaroslava Bartashevich

Best: 40.0% on polymarket

▲+0.5%

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

40.0%

39.5%

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.

Madison Sieg

cheapest single venue: polymarket at 0.600

Retail tier ($5k/venue)

$10.0K@ 0.666 avg

+4.24% vs cheapest single venue

kalshi$5.0K @ 0.639

polymarket$5.0K @ 0.693

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

Sharp tier ($25k/venue)

$30.0K@ 0.750 avg

+8.26% vs cheapest single venue

polymarket$5.0K @ 0.693

kalshi

Arbitrage Opportunity

+0.50%theoretical onlyPAPER

Fillable up to $436

Madison Sieg (polymarket, $603) — slippage 2.6% — eats into edge

Outcome	Platform	Odds	Stake	To win
Madison Siegthin	polymarket	1.67	$603	$1005
Yaroslava Bartashevichthin	kalshi	2.53	$397	$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 — Madison Sieg

Spread

0.5pp

kalshi at 60.5% vs polymarket at 60.0%

Expected Value

+0.83%

Per $1 staked at polymarket (1.67) if kalshi's price is fair.

Kelly Stake

1.3%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

polymarket

updated just now

Volume: —
24h Volume: —
Liquidity: $4.3K
Open Interest: —

Resolves: in 7d 1h

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

kalshi

updated just now

Volume: $1
24h Volume: $1
Liquidity: $0
Open Interest: $1

Resolves: in 14d 1h

Settlement Timeline

polymarketin 7d 1h · Jul 8, 2026, 9:00 AM
kalshiin 14d 1h · Jul 15, 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 Polymarket Trade on Kalshi

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