Bartunkova vs. Anisimova Is a Dead Heat — With a Long Match Coming

A first-round match at the National Bank Open that looked like routine business for Amanda Anisimova has become one of the most contested calls on the board. Nikola Bartunkova, the younger Czech challenger, has surged into a virtual coin-flip against the established American, with the money that once leaned comfortably toward Anisimova now split almost down the middle.

The headline number is a 19-point swing toward Bartunkova over the past 24 hours — a sharp, high-volume move on a market that has drawn nearly $3.4 million in single-day trading, making it one of the most actively bet matches of the tournament. That kind of volume on that kind of move is not noise; it reflects something the crowd believes it knows, whether that is a Bartunkova practice report, an Anisimova health concern, or simply a reassessment of the form gap between them. The cause is inference, not fact — but the scale of the reprice demands a serious explanation.

There is a wrinkle worth noting: a cross-venue disagreement sits underneath this market, with one platform pricing Bartunkova as a heavy favorite and another holding her near the underdog line. The deeper market by today's volume leans toward Bartunkova as the favorite, which gives that read more weight — but the gap between venues is wide enough that even the directional signal carries uncertainty. What both sides agree on is the match length: the over on total games is priced as a near-certainty, signaling that whoever wins, they will earn it across a grinding, extended contest.

That expected length matters for how to read the outright odds. A match priced as almost certain to go long is a match where Bartunkova's serve durability, Anisimova's return consistency, and physical conditioning in Montreal's summer heat all become decisive variables. The money's collective belief appears to be that Bartunkova can hang with Anisimova deep into sets — a significant upgrade from how this matchup might have been read on the draw sheet alone.

Elsewhere in the tournament, the American men's contingent is largely holding serve: Nakashima is a solid favorite, Shelton and Tiafoe are priced in the 60s but have shed a few points, and the overall picture is one of competitive first rounds rather than easy passages. Bartunkova versus Anisimova is the outlier — the match the market has decided, late and loudly, deserves a second look. At 55-45, the split is the story: there is no confident call here, only a genuine contest that the money expects will run the full distance.