The Prediction Markets

Li vs Tagger

Starts in 5 hKickoff
Traded
$13K
Venues
Polymarket, Kalshi
Prices updated
just now
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What the markets expect

Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5 75%

Next is Li at 57.2%. The venues differ most on Li (Polymarket 56.5%, Kalshi 58%), a 1.5-point gap.

Odds by venue

Consensus blends each venue’s last price, weighted by how much has traded there. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.

Prices come from our regular polls of each venue, the oldest 1 min ago. Ages are as of when this page was built.

  • Polymarket
  • Kalshi
Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5
75%
Polymarket 75%polled, 1 min agoBest Yes 76¢ on Polymarket, $100 pays $132 (1.32x)
Polymarket
Contract
Japan Women's Open: Ann Li vs Lilli Tagger Set 1 O/U 8.5
Last price
75%
As of
Polled 1 min ago
Buy Yes
76¢
Sell Yes
74¢
$100 on Yes pays
$132 (1.32x)
Trade this on Polymarket
Li
57.2%
Polymarket 56.5%polled, 1 min agoKalshi 58%polled, 32s agoBest Yes 57¢ on Polymarket, $100 pays $175 (1.75x)
Polymarket
Contract
Japan Women's Open: Ann Li vs Lilli Tagger
Last price
56.5%
As of
Polled 1 min ago
Buy Yes
57¢
Sell Yes
56¢
$100 on Yes pays
$175 (1.75x)
Volume
$5K
Trade this on Polymarket
Kalshi
Contract
Ann Li
Last price
58%
As of
Polled just now
Buy Yes
58¢
Sell Yes
56¢
$100 on Yes pays
$172 (1.72x)
Volume
$4K
Trade this on Kalshi
Partial parity

Payoffs match in ordinary outcomes; see the rule differences below the table.

No arbitrage: the best bid elsewhere is 56¢, at or below the cheapest ask of 57¢.

Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5
54.5%
Polymarket 54.5%polled, 1 min agoBest Yes 55¢ on Polymarket, $100 pays $182 (1.82x)
Polymarket
Contract
Japan Women's Open: Ann Li vs Lilli Tagger Game Spread +/-0.5
Last price
54.5%
As of
Polled 1 min ago
Buy Yes
55¢
Sell Yes
54¢
$100 on Yes pays
$182 (1.82x)
Volume
$36
Trade this on Polymarket
Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5
54%
Polymarket 54%polled, 1 min agoBest Yes 55¢ on Polymarket, $100 pays $182 (1.82x)
Polymarket
Contract
Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5
Last price
54%
As of
Polled 1 min ago
Buy Yes
55¢
Sell Yes
53¢
$100 on Yes pays
$182 (1.82x)
Volume
$832
Trade this on Polymarket
Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5
54%
Polymarket 54%polled, 1 min agoBest Yes 56¢ on Polymarket, $100 pays $179 (1.79x)
Polymarket
Contract
Japan Women's Open: Ann Li vs Lilli Tagger Set 2 Winner
Last price
54%
As of
Polled 1 min ago
Buy Yes
56¢
Sell Yes
52¢
$100 on Yes pays
$179 (1.79x)
Trade this on Polymarket
Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5
52.5%
Polymarket 52.5%polled, 1 min agoBest Yes 53¢ on Polymarket, $100 pays $189 (1.89x)
Polymarket
Contract
Japan Women's Open: Ann Li vs Lilli Tagger Set 1 Winner
Last price
52.5%
As of
Polled 1 min ago
Buy Yes
53¢
Sell Yes
52¢
$100 on Yes pays
$189 (1.89x)
Trade this on Polymarket
Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5
50%
Polymarket 50%polled, 1 min agoBest Yes 55¢ on Polymarket, $100 pays $182 (1.82x)
Polymarket
Contract
Japan Women's Open: Ann Li vs Lilli Tagger Set 1 O/U 9.5
Last price
50%
As of
Polled 1 min ago
Buy Yes
55¢
Sell Yes
45¢
$100 on Yes pays
$182 (1.82x)
Trade this on Polymarket
Completed Match
48%
Polymarket 48%polled, 1 min agoBest Yes 95¢ on Polymarket, $100 pays $105 (1.05x)
Polymarket
Contract
Completed Match
Last price
48%
As of
Polled 1 min ago
Buy Yes
95¢
Sell Yes
1¢
$100 on Yes pays
$105 (1.05x)
Volume
$100
Trade this on Polymarket
Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5
48%
Polymarket 48%polled, 1 min agoBest Yes 96¢ on Polymarket, $100 pays $104 (1.04x)
Polymarket
Contract
Japan Women's Open: Ann Li vs Lilli Tagger Set 2 O/U 10.5
Last price
48%
As of
Polled 1 min ago
Buy Yes
96¢
Sell Yes
—
$100 on Yes pays
$104 (1.04x)
Trade this on Polymarket
Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5
48%
Polymarket 48%polled, 1 min agoBest Yes 96¢ on Polymarket, $100 pays $104 (1.04x)
Polymarket
Contract
Japan Women's Open: Ann Li vs Lilli Tagger Set 2 O/U 8.5
Last price
48%
As of
Polled 1 min ago
Buy Yes
96¢
Sell Yes
—
$100 on Yes pays
$104 (1.04x)
Trade this on Polymarket
Show 8 more outcomes
Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5
48%
Polymarket 48%polled, 1 min agoBest Yes 96¢ on Polymarket, $100 pays $104 (1.04x)
Polymarket
Contract
Japan Women's Open: Ann Li vs Lilli Tagger Set 2 O/U 9.5
Last price
48%
As of
Polled 1 min ago
Buy Yes
96¢
Sell Yes
—
$100 on Yes pays
$104 (1.04x)
Trade this on Polymarket
Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5
47%
Polymarket 47%polled, 1 min agoBest Yes 48¢ on Polymarket, $100 pays $208 (2.08x)
Polymarket
Contract
Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 22.5
Last price
47%
As of
Polled 1 min ago
Buy Yes
48¢
Sell Yes
46¢
$100 on Yes pays
$208 (2.08x)
Trade this on Polymarket
Lilli Tagger
44%
Kalshi 44%polled, 32s agoBest Yes 44¢ on Kalshi, $100 pays $227 (2.27x)
Kalshi
Contract
Lilli Tagger
Last price
44%
As of
Polled just now
Buy Yes
44¢
Sell Yes
43¢
$100 on Yes pays
$227 (2.27x)
Volume
$4K
Trade this on Kalshi
Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5
42.5%
Polymarket 42.5%polled, 1 min agoBest Yes 43¢ on Polymarket, $100 pays $233 (2.33x)
Polymarket
Contract
Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 23.5
Last price
42.5%
As of
Polled 1 min ago
Buy Yes
43¢
Sell Yes
42¢
$100 on Yes pays
$233 (2.33x)
Trade this on Polymarket
Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5
40%
Polymarket 40%polled, 1 min agoBest Yes 41¢ on Polymarket, $100 pays $244 (2.44x)
Polymarket
Contract
Japan Women's Open: Ann Li vs Lilli Tagger Total Sets: O/U 2.5
Last price
40%
As of
Polled 1 min ago
Buy Yes
41¢
Sell Yes
39¢
$100 on Yes pays
$244 (2.44x)
Trade this on Polymarket
Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5
34.5%
Polymarket 34.5%polled, 1 min agoBest Yes 35¢ on Polymarket, $100 pays $286 (2.86x)
Polymarket
Contract
Set Handicap: Ann Li (-1.5) vs Lilli Tagger (+1.5)
Last price
34.5%
As of
Polled 1 min ago
Buy Yes
35¢
Sell Yes
34¢
$100 on Yes pays
$286 (2.86x)
Volume
$57
Trade this on Polymarket
Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5
26.5%
Polymarket 26.5%polled, 1 min agoBest Yes 28¢ on Polymarket, $100 pays $357 (3.57x)
Polymarket
Contract
Set Handicap: Lilli Tagger (-1.5) vs Ann Li (+1.5)
Last price
26.5%
As of
Polled 1 min ago
Buy Yes
28¢
Sell Yes
25¢
$100 on Yes pays
$357 (3.57x)
Volume
$161
Trade this on Polymarket
Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5
26%
Polymarket 26%polled, 1 min agoBest Yes 28¢ on Polymarket, $100 pays $357 (3.57x)
Polymarket
Contract
Japan Women's Open: Ann Li vs Lilli Tagger Set 1 O/U 10.5
Last price
26%
As of
Polled 1 min ago
Buy Yes
28¢
Sell Yes
24¢
$100 on Yes pays
$357 (3.57x)
Trade this on Polymarket

No cross-venue arbitrage right now: on every matched outcome, the best bid on one venue is at or below the cheapest ask on the other. Find markets with open spreads

Mostly the same bet: two differences

Where they differ

  • If the match is postponed: Kalshi resolves to a fair price if the match does not start within 48 hours of the scheduled time (tennis: not finished within two weeks); Polymarket stays open until the match is played and resolves 50-50 only if it is cancelled with no make-up (tennis: ~14 days).
  • Kalshi requires a ball to be played and pays the winner; Polymarket pays the player who advances, including on retirement. A pre-match walkover is a fair price on Kalshi, 50-50 on Polymarket.
Polymarket
Polymarket resolves via:
UMA optimistic oracle, source: wtatennis.com
Kalshi
Kalshi resolves via:
Kalshi (CFTC-regulated exchange), source: WTA
Show full rule comparison
  • If the match is postponed: Kalshi resolves to a fair price if the match does not start within 48 hours of the scheduled time (tennis: not finished within two weeks); Polymarket stays open until the match is played and resolves 50-50 only if it is cancelled with no make-up (tennis: ~14 days).
  • Kalshi requires a ball to be played and pays the winner; Polymarket pays the player who advances, including on retirement. A pre-match walkover is a fair price on Kalshi, 50-50 on Polymarket.
  • Trading closes Oct 30, 2026, 1:00 AM UTC on Polymarket and Nov 6, 2026, 2:30 AM UTC on Kalshi.

Summarized from each venue’s published rules; the venue’s own rules page is the final word.

How the odds have moved

The top 3 outcomes on both venues, with the consensus between them. Hover for exact values.

  • Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5
  • Li
  • Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5

Order books

Each venue’s resting orders for the selected outcome’s Yes contract, side by side. Top of book streams live; depth refreshes every 15 seconds.

Polymarket

Open on Polymarket ↗

Top of book

Connecting
Best bid
—
Spread
—
Best ask
—

Waiting for the first live quote…

Depth · top 8 levels

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Recent trades

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Kalshi

Kalshi doesn’t list Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5 for this event.

What your stake buys

Enter a stake to see where it buys the most after fees, using each venue’s live order book.

$
Buy

Loading both order books…

Buys at the asks resting now (taker orders), cheapest after fees first, from order-book snapshots up to 15 seconds old. Fees: Kalshi 0.07 × price × (1 − price) per share, rounded up to the cent; Polymarket 0.05 × price × (1 − price) per share (sports rate). Fee calculator. Estimates only, not advice.

About this market

Live prediction market odds for "Li vs Tagger". Japan Women's Open: Ann Li vs Lilli Tagger Match O/U 21.5 leads at 75%. Next is Li at 57.2%. $13K has traded across 18 outcomes on Kalshi and Polymarket. The market is expected to resolve by Nov 6, 2026.

Questions

What does the consensus price mean?

It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.

How is the payout worked out?

A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.

Why do the venues show different prices?

Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.

Is a price gap an arbitrage?

Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.

How fresh are these prices?

Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.

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