Circus is perhaps one of a few select words that come to mind over the course of the last three days. That’s not even taking into account what has happened in the earlier Rounds. With all 2nd Round and 3rd Round matches now complete, the Round of 16 is set and the metrics shared pre–Day 5 are a far cry from what should be unfolding if the Top 10 players in the world — along with the Top 20 in all fairness, did in fact correlate with their ranking.
Which brings a number of issues to light.
Recall the 2024 Season when the WTA Tour went through quite the disruption i.e. a number of seasoned Top 10 players simply regressed quite substantially. Then the 2025 Season did see some consolidation on the WTA Tour whilst the ATP Tour was due for its turn. It happened, but perhaps not as drastically. As in, two to three players opposed to four to five players in reality.
But at the top echelon of play, it’s the micro percentages that tell quite the significant story if you’re paying close attention.
Come mid-way through the 2025 Season towards the beginning of the 2026 Season, both Tours had reached a relative level of consolidation as far as the Top 10 were concerned with that elusive 2% still ready to be displaced. Yes, remember the rule of the 8% — those who stay, over the 2% which we have seen range towards 5% over the last two seasons due to this consolidation phase.
With that out of the way, the ATP Tour has not seen this level of disruption pre-Round of 16 for some time. Whilst I could go back through the last 4-5 seasons and give you an explicit answer, I won’t be doing that. Let me know instead! We have seen similar disruptions on the WTA Tour but in all fairness, the WTA Tour is fairing much much better. When I outlined the potential Round of 16 across both tours half-way through the 2nd Round, I don’t think anyone would foresee next to all Top 10 seeds tumble.
Sinner out. Shelton out. De Minaur out. Djokovic out. Zverev and Auger-Alliassime are the sole Top 10 survivors. And it’s only the Round of 16. In contrast, Sabalenka, Svitolina, Swiatek and Andreeva still remain. Double that of the ATP Tour but still, the WTA Tour has still been shaken.
To get it out of the way, Round of 16 success metrics: Sabalenka, Osaka, Keys, Shnaider, Kalinskaya, Svitolina, Bencic, Swiatek, Kostyuk, Andreeva and Cirstea. That’s 11 out of a possible 16 with Gauff, Mertens, Anisimova, Muchova and Starodubtseva falling short. That’s 11% short of 80% at 69% which itself shows an alarming rate of disassociation between a players level of play and their performance. Too many Top 10 players on the WTA Tour have not been able to establish and maintain their baseline which should hold until the Round of 16 when they’re more pressed to play another player ‘ranked’ inside the Top 16 if the seeds fall into place.
But to be frank, this rarely happens albeit it should if players are holding their own.
Which means these 11 players have performed more robustly despite the pressure and in respect to the Top 10 FOUR remain and again, this is the Round of 16 not the semifinals! Interestingly, of those 11 four have won Grand Slams: Swiatek, Sabalenka, Osaka and Keys. Svitolina and Andreeva have been ranked inside the Top 10 for more than a season (an important metric). Bencic has been ranked inside the Top 10 and simply is just outside (post-French Open she’ll be back inside the Top 10). Then there’s Shnaider and Kalinskaya who were both penned to become barrier breakers during the 2025 Season if their performances continued to progress. Both ironically regressed until now – we’re seeing a change in their respective curves. And then there’s Kostyuk and Cirstea, both coming off career and ranking highs. It is questionable how far their newfound high will last before the eventually drop when the new baseline is formed. That’s a lot to consider.
Tiafoe, Auger-Aliassime, Coboli, Ruud, Jodar, Carreno Busta and Zverev. That’s 7 out of a possible 16. Truthfully, this has not happened before (in the timespan of the data). The metrics can have mishaps but not like this meaning we need to dive deeper. At 44% there’s a lot to uncover. But I don’t want to take away from the remaining 7 and Zverev’s best chance to win a Grand Slam since he faced Thiem in the US Open Championships. Both Zverev and Ruud are the only players who have been Grand Slam Finalists. Tiafor and Auger-Aliassime have both been semifinalists. Coboli is on a new career high — ranking and performance, as is Jodar who’s recent rise is being solidified with his now Round of 16 debut. Carreno Busta is a former Top 10 player and former. Which means 63% of your Round of 16 actually have been there before in contrast to 81% on the WTA Tour (despite current rankings!).
What’s interesting is that there are similar patterns emerging.
Kostyuk and Coboli, Cirstea and Carreno Busta, Tiafoe and Kalinskaya, Auger-Aliassime and Andreeva, although I’m hesitant then to pair the likes of Ruud and Zverev since these players are Finalists and Swiatek, Sabalenka, Osaka and Keys are Grand Slam Champions in their own right. Then there’s also Shnaider, Svitolina and Bencic. Perhaps Svitolina and Zverev align with their consistency, similar to say Ruud and Bencic who whilst consistent have had some results this reason push them either outside the Top 10 (Bencic) or Top 20 (Ruud) before regaining their current form. Either way, there are similarities here whether you choose to see them or not.
Now for those who were not anticipated and the spread of anomalies to make their way into the Round of 16 at the 2026 French Open Championships on the WTA Tour: Potapova (after taking out Gauff), Parry (after taking out Anisimova), Chwalinska (defeated Mertens in the 2nd Round whilst Sakkari defeated Noskova in the 1st Round), Teichmann (defeating Muchova), Cirstea (while mentioned, she defeated Sierra who defeated Paolini in the 2nd Round), and Wang (who defeated Starodubtseva, who defeated Rybakina in the 2nd Round). Of these players, 4 are not seeds: Chwalinska, Parry, Teichmann and Wang — all but Teichmann of whom are making their maiden Round of 16 appearance at a Grand Slam and can therefore expect a nice jump in their ranking after the Championships. As for the ATP Tour, the list is greater: JM Cerundolo (who defeated Sinner in the 2nd Round), Berrettini (defeated Comesana who defeated Darderi in the 2nd Round), Arnaldi (defeated Collignon who defeated Shelton in the 2nd Round), Tabilo (defeated Vacherot in the 2nd Round), Svajda (defeated Walton in the 2nd Round who defeated Medvedev in the 1st Round), Mensik (defeated De Minaur), Rublev (defeated Borges), Fonseca (defeated Djokovic) and De Jong (defeating Khachanov). Of these players, 7 are not seeds: JM Cerundolo, Berrettini (former Grand Slam Finalist), Arnaldi, Tabilo, Svajda, Carreno Busta and De Jong — all other than Berrettini, Arnaldi and Carreno Busta are making their debut into the Round of 16 at a Grand Slam. Big range of abnormalities that are significantly more than a 20% churn in the analytics.
So what does the Round of 16 hold for the WTA Tour?
5 x matches are seeds facing seeds.
2 x matches are one seed facing an unseeded opponent.
1 x match is the anomaly with no seeds in play.
What about the ATP Tour?
2 x matches are seeds facing seeds.
5 x matches are one seed facing an unseeded opponent.
1 x match is the anomaly with no seeds in play.
See the pattern?
What about the predictive analytics? I do want to be cautious since the 2026 French Open has been a bloodbath. That said, on the WTA Tour 5 of the 8 Quarter-fInalists are still in play and 2 of the 4 Semi-finalists named. On the ATP Tour, 5 of the 8 Quarter-fInalists are still in play and 2 of the 4 Semi-finalists named. But things have since changed. Considering the newfound landscape of both respective draws, here’s what I’m gauging:
WTA Tour Quarter-finals: Sabalenka v Keys; Kalinskaya [NEW] v Parry [NEW]; Bencic v Swiatek; Andreeva [NEW] v Cirstea.
WTA Tour Semi-finals? Sabalenka v Kalinskaya [NEW]; Swiatek v Andreeva [NEW].
Finals? I’ll still stand by Swiatek v Sabalenka.
ATP Tour Quarter-finals: Berrettini [NEW] v Arnaldi [NEW]; Auger-Aliassime v Coboli; Rublev [NEW] v Ruud; Jodar v Zverev.
ATP Tour Semi-finals? Berrettini (little bias here) [NEW] v Auger-Aliassime; Ruud [NEW] v Zverev.
Finals? I’ll stick with those who are ranked inside the Top 5: Auger-Aliassime v Zverev.
Champions? This is purely subjective now but who can’t go past Swiatek claiming another crown and Zverev finally securing his maiden Grand Slam. Then again, for Felix to break through would be well deserved with the year he’s had and you can never write off Sabalenka. Let’s see. Remember, we’re only half way through the Championships so a lot is bound to still change! Until then, let’s see who remains, who falls and which anomaly pushes through. If anythings for sure, by seasons end we will have new barrier breakers and the rule of the 8% will be firmly in tact with the real consolidation process under way. Unfortunately for the players, it’s happening right here. Right now. In the first week of a Grand Slam. No one ever said timing is/was perfect.
