TennisUPCOMING

Stale· updated 3m ago

Rome: Kajsa Rinaldo Persson vs Darya Astakhova

Other · July 13, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0.000000

Platform Prices — Kajsa Rinaldo Persson

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
PolymarketBest	1.80	55.6%	$0.56	---	Bet Here
KalshiBest	1.77	56.5%	$0.56	+0.9pp	Bet Here

PolymarketBest

$0.56

Odds

1.80

Implied

55.6%

Edge

---

Bet Here

KalshiBest

$0.56

Odds

1.77

Implied

56.5%

Edge

+0.9pp

Bet Here

All Outcomes

Kajsa Rinaldo Persson

Best: 56.5% on kalshi

▲+0.9%

Prediction market is 0.9% cheaper than sportsbooks. Consider buying on PM.

55.6%

56.5%

Darya Astakhova

Best: 44.4% on polymarket

▲+0.9%

Prediction market is 0.9% cheaper than sportsbooks. Consider buying on PM.

44.4%

43.5%

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.

Kajsa Rinaldo Persson

cheapest single venue: polymarket at 0.556

Retail tier ($5k/venue)

$10.0K@ 0.614 avg

+4.59% vs cheapest single venue

polymarket$5.0K @ 0.587

kalshi$5.0K @ 0.641

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

Sharp tier ($25k/venue)

$50.0K@ 0.751 avg

+5.88% vs cheapest single venue

polymarket$25.0K @ 0.710

Arbitrage Opportunity

+0.91%theoretical onlyPAPER

Stake split for $1,000 bankroll

Darya Astakhova (kalshi, $439) — slippage 3.0% — eats into edge

Outcome	Platform	Odds	Stake	To win
Kajsa Rinaldo Perssonthin	polymarket	1.80	$561	$1009
Darya Astakhovathin	kalshi	2.30	$439	$1009

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 — Kajsa Rinaldo Persson

Spread

0.9pp

kalshi at 56.5% vs polymarket at 55.6%

Expected Value

+1.62%

Per $1 staked at polymarket (1.80) if kalshi's price is fair.

Kelly Stake

2.0%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

polymarket

updated just now

Volume: $320
24h Volume: $320
Liquidity: $20.9K
Open Interest: $315

Resolves: in 7d 8h

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

kalshi

updated just now

Volume: $33
24h Volume: $33
Liquidity: $0
Open Interest: $33

Resolves: in 14d 8h

Settlement Timeline

polymarketin 7d 8h · Jul 20, 2026, 2:00 PM
kalshiin 14d 8h · Jul 27, 2026, 2:00 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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