TennisUPCOMING

Live· updated 1m ago

ITF Corroios-Seixal: Rina Saigo vs Elyse Tse

Other · July 7, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

$0.000000

Platform Prices — Rina Saigo

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
KalshiBest	1.21	82.5%	$0.83	---	Bet Here
Polymarket	1.13	88.5%	$0.89	+6.0pp	Bet Here

KalshiBest

$0.83

Odds

1.21

Implied

82.5%

Edge

---

Bet Here

Polymarket

$0.89

Odds

1.13

Implied

88.5%

Edge

+6.0pp

Bet Here

All Outcomes

Rina Saigo

Best: 88.5% on polymarket

▲+6.0%

Prediction market is 6.0% cheaper than sportsbooks. Consider buying on PM.

88.5%

82.5%

Elyse Tse

Best: 17.5% on kalshi

▲+6.0%

Prediction market is 6.0% cheaper than sportsbooks. Consider buying on PM.

11.5%

17.5%

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.

Rina Saigo

cheapest single venue: kalshi at 0.825

Retail tier ($5k/venue)

$6.0K@ 0.843 avg

+2.29% vs cheapest single venue

polymarket$1.0K @ 0.825

kalshi$5.0K @ 0.847

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

Sharp tier ($25k/venue)

$26.0K@ 0.927 avg

+12.39% vs cheapest single venue

polymarket$1.0K @ 0.825

kalshi

Arbitrage Opportunity

+6.38%theoretical onlyPAPER

Fillable up to $269

Elyse Tse (polymarket, $122) — not enough depth at $122 — fillable up to $33

Outcome	Platform	Odds	Stake	To win
Rina Saigothin	kalshi	1.21	$878	$1064
Elyse Tsethin	polymarket	8.70	$122	$1064

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 — Rina Saigo

Spread

6.0pp

polymarket at 88.5% vs kalshi at 82.5%

Expected Value

+7.27%

Per $1 staked at kalshi (1.21) if polymarket's price is fair.

Kelly Stake

25.0%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

polymarket

updated just now

Volume: $25
24h Volume: $25
Liquidity: $342
Open Interest: $25

Resolves: in 7d 10h

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

kalshi

updated just now

Volume: $574
24h Volume: $574
Liquidity: $0
Open Interest: $574

Resolves: in 14d 10h

Settlement Timeline

polymarketin 7d 10h · Jul 14, 2026, 11:30 AM
kalshiin 14d 10h · Jul 21, 2026, 11:30 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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