TennisUPCOMING

Stale· updated 3m ago

Hamburg European Open: Mona Barthel vs Yulia Putintseva

Other · July 21, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0K

Platform Prices — Mona Barthel

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
KalshiBest	8.33	12.0%	$0.12	---	Bet Here
Polymarket	8.00	12.5%	$0.13	+0.5pp	Bet Here

KalshiBest

$0.12

Odds

8.33

Implied

12.0%

Edge

---

Bet Here

Polymarket

$0.13

Odds

8.00

Implied

12.5%

Edge

+0.5pp

Bet Here

All Outcomes

Mona Barthel

Best: 12.5% on polymarket

▲+0.5%

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

12.5%

12.0%

Yulia Putintseva

Best: 89.0% on kalshi

▲+1.5%

Prediction market is 1.5% cheaper than sportsbooks. Consider buying on PM.

87.5%

89.0%

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.

Mona Barthel

cheapest single venue: kalshi at 0.120

Retail tier ($5k/venue)

$10.0K@ 0.164 avg

+29.47% vs cheapest single venue

kalshi$5.0K @ 0.126

polymarket$5.0K @ 0.201

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

Sharp tier ($25k/venue)

$50.0K@ 0.331 avg

+78.04% vs cheapest single venue

kalshi$25.0K @ 0.186

polymarket

Arbitrage Opportunity

+0.50%fillable risk-free returnEXECUTABLE

Stake split for $1,000 bankroll

Outcome	Platform	Odds	Stake	To win
Mona Barthelthin	kalshi	8.33	$121	$1005
Yulia Putintseva	polymarket	1.14	$879	$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 — Mona Barthel

Spread

0.5pp

polymarket at 12.5% vs kalshi at 12.0%

Expected Value

+4.17%

Per $1 staked at kalshi (8.33) if polymarket's price is fair.

Kelly Stake

0.6%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

polymarket

updated just now

Volume: $3.4K
24h Volume: $3.4K
Liquidity: $94.4K
Open Interest: $3.6K

Resolves: in 7d 1h

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

kalshi

updated just now

Volume: $11.9K
24h Volume: $11.9K
Liquidity: $0
Open Interest: $11.5K

Resolves: in 14d 1h

Settlement Timeline

polymarketin 7d 1h · Jul 28, 2026, 8:00 AM
kalshiin 14d 1h · Aug 4, 2026, 8:00 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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