MIAMI GARDENS, Fla. -- Former US Open champions Emma Raducanu and Sloane Stephens were knocked out of the Miami Open on Wednesday, hours after No. 1-ranked and defending champion Iga Swiatek pulled out of the tournament because of a rib injury.
Bianca Andreescu -- the 2019 US Open champ -- defeated Raducanu 6-3, 3-6, 6-2. Andreescu improved to 2-0 lifetime against Raducanu, the 2021 winner at Flushing Meadows.
"Miami has a special place in my heart," Andreescu said. "I've been coming here since I was I think 12 years old, whether it's for vacation or training or, yeah, Orange Bowl. I love that tournament very much. Yeah, coming back here, I think it's just good vibes overall."
Andreescu moves on to face 10th-ranked Maria Sakkari, who had a first-round bye.
Shelby Rogers beat Stephens 6-4, 3-6, 6-2. Stephens has six hard-court titles, including the US Open in 2017 and Miami in 2018.
Rogers will face Australian Open champion and world No. 2 Aryna Sabalenka, who beat Rogers in the second round at Melbourne Park. Sabalenka is coming off a loss in the final at Indian Wells, California, last week.
On the men's side, Dusan Lajovic beat three-time Grand Slam champion Andy Murray 6-4, 7-5.
"I served pretty well, but the rest of the game was a bit of a problem today," the 35-year-old Murray said. "Made a number of errors that obviously I wouldn't expect to be making. I didn't really feel like I moved particularly well, which is really important for me."
Lajovic, a 32-year-old Serbian, will face Maxime Cressy, who had a first-round bye.
Swiatek withdrew because of a rib injury that she is hoping will heal during a break from competition. The 21-year-old from Poland also will sit out her country's Billie Jean King Cup qualifier matches against Kazakhstan on April 13-14.
"I wanted to wait 'til the last minute" to decide whether to play in Miami, Swiatek said at a news conference at the site of the hard-court tournament that began Tuesday. "We were kind of checking if this is the kind of injury you can still play with or this is kind when you can get things worse. So I think the smart move for me is to pull out of this tournament because I want to rest and take care of it properly."
In other action, 24-year-old American J.J. Wolf defeated Alexander Bublik 7-5, 6-3. He'll face No. 7-ranked Andrey Rublev, who had a first-round bye.
Gael Monfils retired from his match against Ugo Humbert due to a persistent wrist injury.