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ITF Gimcheon: Dong Ju Kim vs Keisuke Saitoh

Other · May 21, 2026

Best Price

$0.00

Worst Price

$0.00

Max Gap

0.0%

Total Volume

Platform Prices — Dong Ju Kim

Platform	Decimal Odds	Implied %	Price▲	Edge vs Best	Action
KalshiBest	4.44	22.5%	$0.23	---	Bet Here
Polymarket	4.26	23.5%	$0.24	+1.0pp	Bet Here

KalshiBest

$0.23

Odds

4.44

Implied

22.5%

Edge

---

Bet Here

Polymarket

$0.24

Odds

4.26

Implied

23.5%

Edge

+1.0pp

Bet Here

All Outcomes

Dong Ju Kim

Best: 23.5% on polymarket

▲+1.0%

Prediction market is 1.0% cheaper than sportsbooks. Consider buying on PM.

22.5%

23.5%

Keisuke Saitoh

Best: 77.5% on kalshi

▲+1.0%

Prediction market is 1.0% cheaper than sportsbooks. Consider buying on PM.

77.5%

76.5%

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.

Dong Ju Kim

cheapest single venue: kalshi at 0.225

Retail tier ($5k/venue)

$10.0K@ 0.543 avg

+41.96% vs cheapest single venue

kalshi$5.0K @ 0.382

polymarket$5.0K @ 0.703

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

Sharp tier ($25k/venue)

$50.0K@ 0.561 avg

+33.81% vs cheapest single venue

kalshi$25.0K @ 0.420

polymarket

Arbitrage Opportunity

+1.01%theoretical onlyPAPER

Stake split for $1,000 bankroll

Dong Ju Kim (kalshi, $227) — slippage 13.0% > 10% cap

Keisuke Saitoh (polymarket, $773) — slippage 2.7% — eats into edge

Outcome	Platform	Odds	Stake	To win
Dong Ju Kimthin	kalshi	4.44	$227	$1010
Keisuke Saitohthin	polymarket	1.31	$773	$1010

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 — Dong Ju Kim

Spread

1.0pp

polymarket at 23.5% vs kalshi at 22.5%

Expected Value

+4.44%

Per $1 staked at kalshi (4.44) if polymarket's price is fair.

Kelly Stake

1.3%

Recommended bankroll fraction (capped at quarter Kelly).

Platform Activity

kalshi

updated just now

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

Resolves: in 14d 8h

polymarket

updated just now

Volume: —
24h Volume: —
Liquidity: $1.2K
Open Interest: —

Resolves: in 7d 10h

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

Settlement Timeline

polymarketin 7d 10h · May 29, 2026, 4:15 AM
kalshiin 14d 8h · Jun 5, 2026, 3:00 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 Kalshi Trade on Polymarket

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