Women's Tennis Books — ITF Circuit and the 2027 Majors

$41,269 went into a contract priced at half a cent. Ipek Oz is 99.5% to beat Alexa Karatancheva and has taken $62,683 of the board's $103,951. Karatancheva, at 0.5%, has taken the other $41,269—40% of the day—and carries 38,568 contracts of open interest, only a third less than the favourite's.

The second board is the counterexample. Tran–Vickery is 10.5 / 89.0 and the two sides have taken $11,954 and $11,381: a fifty-fifty volume split on a nine-to-one price, with the underdog marginally ahead. On a board that wide, that is the closest thing to balanced two-way flow the ITF women's circuit produces.

Together those two matches are $127,285 in a day, which is more than most of the national election boards in this catalog turn in a week. The women's futures tier is a genuinely deep market attached to a genuinely obscure one.

This page carries the women's ITF circuit. Left: Oz–Karatancheva, 99.5 / 0.5 on $103,951. Right: the 2027 Australian Open women's board, four months out, as the control.

Tran–Vickery, $23,334, settling at 17:00 UTC. Vickery leads at 89% but Tran at 10.5% has taken slightly more of the day. Beside it, Manifold's season-long board on which players win a title—the only non-Kalshi tennis market in this catalog.

The men's 2027 Australian Open board turns $254 against the women's $585—the one place in tennis where the women's board is the deeper of the two, and both are effectively empty.

Sinner is marked 42.0% on two dollars; Alcaraz is quoted 2 bid / 44 ask. The mids on both boards sum past 100% because almost nothing has traded, which is what a listed market without a maker looks like.

Two boards, $127,285, and the season's majors are four months away. The ITF circuit is where Kalshi's tennis volume actually lives between grand slams, and this page tracks it rather than pretending the majors are still the story.

The half-cent leg is not noise. It has appeared on every women's ITF board this page has anchored on, at ratios between 30% and 40% of total volume, and open interest says it is held rather than turned. Whatever is driving it is a standing behaviour of this market, not a day's accident.

Watch the 2027 Australian Open board for contrast. It is the same sport, four months out, and it trades a rounding error against these two matches. Time to settlement, not field quality, is what produces volume here.

Left: Ipek Oz at 99.5%, $62,683 traded, 62,831 contracts held. Right: Alexa Karatancheva at 0.5%, $41,269 traded, 38,568 contracts held.

The open interest is the part worth noticing. A cheap leg that is being scalped shows volume far above open interest; this one shows them within 7% of each other, which means the position is being carried into settlement.