Just six months after the birth of her daughter Bella, Switzerland's Tokyo 2020 Olympic gold medallist is returning to the WTA Tour.

The Tunisian's presence is certainly missed at this year's US Open.

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The mom of two is competing at the Mutua Madrid Open, where she outlasted American Peyton Stearns in a final-set tiebreaker, while her eldest debuts at an under-12 event in Greece.

The No. 5 seed dropped just five games to beat the Romanian on Day 2, as Wimbledon champion Marketa Vondrousova also won. Linda Noskova upset No. 10 seed Jelena Ostapenko.

No. 7 seed Vekic eased past 2023 US Open junior champion Katherine Hui, while Australian Open semifinalist and No. 5 seed Yastremska needed three sets to beat Caroline Dolehide.

Four of the eight moms are Grand Slam champions, and all four of them have won the Australian Open before, too.

After a first-round loss in San Diego, Linette is through to the quarterfinals in Guangzhou. Tatjana Maria and Lucia Bronzetti also advanced.

There are so many moms in the draw that two of them will even play each other in the first round on Tuesday.

Two points from defeat, the Romanian battled to a 4-6, 7-6 (6), 6-4 victory on Thursday.