Cincinnati gives Australia’s singles squad a hard-court measuring stick

Alex de Minaur leads a compact Australian contingent into Cincinnati, while Kimberly Birrell and Ajla Tomljanovic arrive with very different questions to answer before the US Open.

The Demon gets another top-six test Cincinnati’s singles action begins on Thursday, August 13, with Alex de Minaur again carrying Australia’s clearest men’s title hopes. The Australian is listed as the sixth-ranked player in the ATP field, while James Duckworth enters at No. 83. (cincinnatiopen.com)

For de Minaur, this is less about discovering whether he belongs at Masters 1000 level and more about converting a favourable position into a deep run. He has already banked a significant 2026 title in Rotterdam, where he defeated Felix Auger-Aliassime 6-3, 6-2 without facing a break point. That performance pushed him to No. 6 in the live rankings at the time. (atptour.com)

The North American hard-court swing now asks a slightly different question. De Minaur’s speed and counterpunching are obvious weapons, but Cincinnati’s quick surface can reward first-strike tennis and expose a passive second ball. The Australian’s best route through the draw will be to turn defence into attack earlier, rather than simply surviving long exchanges and hoping opponents blink.

Duckworth’s opportunity is real, but unforgiving Duckworth’s presence gives Australia a second men’s singles entrant, though the draw offers little room for a slow start. His ranking places him among the lower-ranked direct entries in a field stacked with Grand Slam champions and established top-20 opponents. (cincinnatiopen.com)

The veteran has already shown he can create uncomfortable moments on hard courts. At the Australian Open in January, he faced Jannik Sinner and was beaten 6-1, 6-4, 6-2, but the matchup illustrated the level required to trouble the very best: protect serve, take time away and keep the scoreboard moving. (atptour.com)

Cincinnati is therefore a valuable calibration point rather than a vanity appearance. A first-round win would matter, but so would the manner of it — particularly whether Duckworth can make opponents work behind their second serve and avoid getting dragged into low-percentage exchanges.

Birrell brings the clearest WTA momentum Kimberly Birrell is the leading Australian name in the women’s field, with Ajla Tomljanovic also listed for the WTA 1000 event. The player list remains subject to change until the draw is published, but both Australians are currently entered. (wtatennis.com)

Birrell arrives with a stronger statistical platform than her ranking alone suggests. The WTA lists her at No. 66 with a 22-18 singles record for 2026, including a semi-final appearance at a WTA 500 event and a round-of-32 showing at WTA 1000 level. (wtatennis.com)

Her most encouraging stretch came in Austin, where she defeated Tomljanovic in the quarter-finals to reach her second semi-final of the season. The all-Australian match was not a fluke result: Birrell won in straight sets and levelled their head-to-head record at 1-1. (wtatennis.com)

That makes Cincinnati a useful test of whether Birrell can translate her improved consistency into a deeper result against a larger, more powerful field. Her return game and willingness to extend rallies remain central, but the next step is taking control before opponents can dictate with their first strike.

Tomljanovic is chasing a reset Tomljanovic’s inclusion gives the Australian women’s contingent a different storyline. Her 2026 campaign has included wins over quality opposition and a quarter-final run in Austin, but Birrell’s straight-sets victory in that event underlined how narrow the margins are between the two Australians. (wtafiles.wtatennis.com)

Cincinnati’s expanded 96-player draw creates opportunity, but it also means the opening rounds are crowded with dangerous unseeded players and qualifiers. For Tomljanovic, the priority is not merely surviving the first match; it is finding the clean, assertive ball-striking that has previously made her a threat on hard courts.

With the US Open approaching, Australia’s Cincinnati story is consequently a spread of smaller tests rather than one grand headline: de Minaur must press his top-six advantage, Duckworth must upset the bracket, Birrell must prove her form travels and Tomljanovic must re-establish herself. The answers will arrive quickly once the singles draws land.

Sources Players - Cincinnati Open Alex de Minaur downs Felix Auger-Aliassime for Rotterdam title: 'Third time lucky!' | ATP Tour | Tennis Jannik Sinner cruises on at Australian Open, tips his cap to Carlos Alcaraz's magic touch | ATP Tour | Tennis Cincinnati Open 2026 Player List | WTA Official Kimberly Birrell | Grand Slams | Activity & More – WTA Official Birrell vs. Tomljanovic | Quarterfinals ATX Open 2026 | WTA Official MATCH NOTES Cincinnati Open 2026 Players