TennisUPCOMING

Live· updated 51s ago

ITF Monastir: Katja Wiersholm vs Benedetta Ortenzi

Other · July 8, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0.000000

Platform Prices — Katja Wiersholm

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
PolymarketBest	1.38	72.5%	$0.73	---	Bet Here
Kalshi	1.30	77.0%	$0.77	+4.5pp	Bet Here

PolymarketBest

$0.73

Odds

1.38

Implied

72.5%

Edge

---

Bet Here

Kalshi

$0.77

Odds

1.30

Implied

77.0%

Edge

+4.5pp

Bet Here

All Outcomes

Katja Wiersholm

Best: 77.0% on kalshi

▲+4.5%

Prediction market is 4.5% cheaper than sportsbooks. Consider buying on PM.

72.5%

77.0%

Benedetta Ortenzi

Best: 27.5% on polymarket

▲+5.5%

Prediction market is 5.5% cheaper than sportsbooks. Consider buying on PM.

27.5%

22.0%

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.

Katja Wiersholm

cheapest single venue: polymarket at 0.725

Retail tier ($5k/venue)

$10.0K@ 0.806 avg

+0.09% vs cheapest single venue

kalshi$5.0K @ 0.806

polymarket$5.0K @ 0.807

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

Sharp tier ($25k/venue)

$30.0K@ 0.884 avg

+9.55% vs cheapest single venue

polymarket$5.0K @ 0.807

kalshi

Arbitrage Opportunity

+5.82%theoretical onlyPAPER

Fillable up to $324

Benedetta Ortenzi (kalshi, $233) — slippage 86.7% > 10% cap — fillable up to $75

Outcome	Platform	Odds	Stake	To win
Katja Wiersholmthin	polymarket	1.38	$767	$1058
Benedetta Ortenzithin	kalshi	4.54	$233	$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 — Katja Wiersholm

Spread

4.5pp

kalshi at 77.0% vs polymarket at 72.5%

Expected Value

+6.21%

Per $1 staked at polymarket (1.38) if kalshi's price is fair.

Kelly Stake

16.4%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

polymarket

updated just now

Volume: $15
24h Volume: $15
Liquidity: $3.4K
Open Interest: $15

Resolves: in 7d 7h

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

kalshi

updated just now

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

Resolves: in 14d 7h

Settlement Timeline

polymarketin 7d 7h · Jul 15, 2026, 8:30 AM
kalshiin 14d 7h · Jul 22, 2026, 8:30 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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