The most-watched match of the US Open’s opening week isn’t in the main draw — the main draw doesn’t even start until Sunday. It’s this afternoon on Arthur Ashe, not before 2 p.m. Eastern, where Serena Williams plays her first US Open match since her 2022 farewell: a wildcard mixed-doubles pairing with Carlos Alcaraz, the tournament’s defending men’s champion.
Their first-round opponents are no exhibition fodder. Erin Routliffe of New Zealand and Britain’s Lloyd Glasspool are both Grand Slam doubles champions — specialists, on a court where doubles craft can neutralize star power fast.
Williams, 44, has been building toward this quietly. After nearly four years away, she returned to competition this season — an appearance at Wimbledon, then a run of doubles events over the summer. She isn’t entered in singles at Flushing Meadows. Alcaraz is coming the other way: today is his first competitive tennis since a right wrist injury in April, six days before he begins defending his singles title.
Two comebacks, one court
Strip out the celebrity and this match is a case study in return-to-play design. The reinvented mixed-doubles event — staged in the week before the main draw — gives both players something sports scientists prize: genuine competitive stakes at a controlled physical dose. For Alcaraz, it’s live reps for the wrist — reaction returns, volleys, match adrenaline — without the five-set grind that would test it too hard, too early. For Williams, it’s the sharpest possible environment to measure four years of ring rust against current tour speed, with a partner who covers half the court.
Our take: The lesson here travels well beyond tennis. Neither of these athletes is jumping straight back into their hardest event — they’re staging exposure: real stakes, reduced dose, fast feedback. That’s the exact opposite of how most people return from a layoff, which is all-or-nothing. Whether Williams and Alcaraz win a single match is almost beside the point — the structure of the comeback is the story. And commercially, the US Open just proved its format bet again: the biggest ticket of week one is an event that didn’t exist in its current form two years ago.
What to watch
- This afternoon’s match itself — not the result so much as movement quality: Williams’s first-step speed after four years, and whether Alcaraz’s wrist looks free on backhand returns.
- Alcaraz’s singles opener next week. Today is the data point; Sunday’s main draw is the exam. How the wrist responds within 48 hours matters more than how it feels tonight.
- Whether this becomes a pattern. If a 44-year-old legend and a rehabbing champion both use the short-format event as a staging ground, expect more stars to treat it as structured preseason rather than a sideshow.