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The Memphis Classic: Yulia Starodubtseva vs Sloane Stephens

Other · July 26, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0.000000

Platform Prices — Yuliia Starodubtseva

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
KalshiBest	1.42	70.5%	$0.71	---	Bet Here
Polymarket	1.35	74.0%	$0.74	+3.5pp	Bet Here

KalshiBest

$0.71

Odds

1.42

Implied

70.5%

Edge

---

Bet Here

Polymarket

$0.74

Odds

1.35

Implied

74.0%

Edge

+3.5pp

Bet Here

All Outcomes

Yuliia Starodubtseva

Best: 74.0% on polymarket

▲+3.5%

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

74.0%

70.5%

Sloane Stephens

Best: 26.0% on polymarket

▲+2.0%

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

26.0%

24.0%

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.

Yuliia Starodubtseva

cheapest single venue: kalshi at 0.705

Retail tier ($5k/venue)

$10.0K@ 0.877 avg

+2.59% vs cheapest single venue

kalshi$5.0K @ 0.855

polymarket$5.0K @ 0.899

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

Sharp tier ($25k/venue)

$30.0K@ 0.898 avg

+0.03% vs cheapest single venue

kalshi$25.0K @ 0.898

Arbitrage Opportunity

+5.82%theoretical onlyPAPER

Fillable up to $361

Sloane Stephens (kalshi, $254) — slippage 28.3% > 10% cap — fillable up to $92

Outcome	Platform	Odds	Stake	To win
Yuliia Starodubtsevathin	kalshi	1.42	$746	$1058
Sloane Stephensthin	kalshi	4.17	$254	$1058

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 — Yuliia Starodubtseva

Spread

3.5pp

polymarket at 74.0% vs kalshi at 70.5%

Expected Value

+4.96%

Per $1 staked at kalshi (1.42) if polymarket's price is fair.

Kelly Stake

11.9%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

polymarket

updated just now

Volume: $118
24h Volume: $118
Liquidity: $5.4K
Open Interest: $105

Resolves: in 6d 19h

Source: https://www.wtatennis.com/scores

kalshi

updated just now

Volume: $3
24h Volume: $3
Liquidity: $0
Open Interest: $3

Resolves: in 14d 19h

Settlement Timeline

polymarketin 6d 19h · Aug 2, 2026, 3:00 PM
kalshiin 14d 19h · 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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