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Live· updated 15s ago

ITF Pelham: Antonia Rivera vs Ana Grubor

Other · May 21, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

Platform Prices — Antonia Vergara Rivera

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
PolymarketBest	1.23	81.5%	$0.82	---	Bet Here
KalshiBest	1.22	82.0%	$0.82	+0.5pp	Bet Here

PolymarketBest

$0.82

Odds

1.23

Implied

81.5%

Edge

---

Bet Here

KalshiBest

$0.82

Odds

1.22

Implied

82.0%

Edge

+0.5pp

Bet Here

All Outcomes

Antonia Vergara Rivera

Best: 82.0% on kalshi

▲+0.5%

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

81.5%

82.0%

Ana Grubor

Best: 18.5% on polymarket

▲+0.5%

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

18.5%

18.0%

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.

Antonia Vergara Rivera

cheapest single venue: polymarket at 0.815

Retail tier ($5k/venue)

$10.0K@ 0.877 avg

+2.92% vs cheapest single venue

polymarket$5.0K @ 0.852

kalshi$5.0K @ 0.902

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

Sharp tier ($25k/venue)

$50.0K@ 0.897 avg

+5.18% vs cheapest single venue

polymarket$25.0K @ 0.852

Arbitrage Opportunity

+0.50%theoretical onlyPAPER

Stake split for $1,000 bankroll

Ana Grubor (kalshi, $181) — slippage 174.7% > 10% cap

Outcome	Platform	Odds	Stake	To win
Antonia Vergara Riverathin	polymarket	1.23	$819	$1005
Ana Gruborthin	kalshi	5.56	$181	$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 — Antonia Vergara Rivera

Spread

0.5pp

kalshi at 82.0% vs polymarket at 81.5%

Expected Value

+0.61%

Per $1 staked at polymarket (1.23) if kalshi's price is fair.

Kelly Stake

2.7%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

polymarket

updated just now

Volume: —
24h Volume: —
Liquidity: $1.0K
Open Interest: —

Resolves: in 7d 3h

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 3h

Settlement Timeline

polymarketin 7d 3h · May 28, 2026, 4:00 PM
kalshiin 14d 3h · Jun 4, 2026, 4:00 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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