Maria Sharapova won a match for the first time since the Australian Open as she beat Mihaela Buzarnescu, 6-4, 6-1, on Sunday in the Madrid Open.

The Russian five-time Grand Slam champion has been struggling with an arm injury, losing her last four matches, crashing out in the first round in Stuttgart last week.

In-form Romanian Buzarnescu reached the Prague Open final last week, but unseeded Sharapova, who took the title in Madrid in 2014, dominated this first round meeting.

Sharapova jumped to a 5-2 lead in the first set but Buzarnescu briefly showed some resistance by winning the next two games.

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The Russian seized the momentum by breaking again to clinch the set and dropped only one more game as she won in 82 minutes to set up a second-round match with another Romanian, Irina-Camelia Begu, who upset No. 5 seed Jelena Ostapenko the evening before.

In another Romanian-Russian clash top seed Simona Halep crushed Ekaterina Makarova 6-1, 6-0, for a 13th straight victory in the tournament.

“I think it was a great match. I played really well. Of course, maybe she didn’t play her best, but she’s always tough to play against,” Halep said.

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Halep has been having fitness issues with her legs and lost to CoCo Vandeweghe in the second round on the Stuttgart clay last week.

“I don’t have problems any more. I had a lot of treatment. I took care of my leg,” Halep said. “It was actually coming from the back. I always have little issues with my back, so I know how to treat it.”

A third Romanian, Sorana Cirstea also reached the second round by beating Czech Katerina Siniakova, 6-4, 2-6, 6-4.

“All the girls from Romania are really strong. They train a lot. They play really well, if they are confident,” Halep said.

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There was a mild upset in the men’s tournament, where unseeded Frenchman Richard Gasquet knocked out Czech 14th seed Tomas Berdych 6-4, 6-2.

Canadian Denis Shapovalov joined Gasquet in the second round after seeing off American Tennys Sandgren 6-1, 6-4.

All results

Women, first round

Simona Halep (ROU x1) bt Ekaterina Makarova (RUS) 6-1, 6-0

Elise Mertens (BEL) bt Alison Van Uytvanck (BEL) 6-4, 6-4

Kristyna Pliskova (CZE) bt Natalia Vikhlyantseva (RUS) 6-4, 6-4

Sara Sorribes Tormo (ESP) bt Madison Keys (USA x13) 7-5, 6-2

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Sloane Stephens (USA x9) bt Silvia Soler-Espinosa (ESP) 6-3, 6-2

Samantha Stosur (AUS) bt Anastasia Pavlyuchenkova (RUS) 6-1, 6-7 (2/7), 6-3

Victoria Azarenka (BLR) bt Aleksandra Krunic (SRB) 6-3, 6-3

Garbine Muguruza (ESP x3) bt Peng Shuai (CHN) 6-4, 6-2

Donna Vekic (CRO) bt Georgina Garcia Perez (ESP) 6-2, 6-4

Sorana Cirstea (ROU) bt Katerina Siniakova (CZE) 6-4, 2-6, 6-4

Petra Kvitova (CZE x10) bt Lesia Tsurenko (UKR) 6-1, 6-2

Monica Puig (PUR) bt Zarina Diyas (KAZ) 6-4, 2-6, 6-2

Aliaksandra Sasnovich (BLR) bt Danielle Collins (USA) 7-5, 6-2

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Johanna Konta (GBR) bt Magdalena Rybarikova (SVK x16) 6-3, 7-5

Bernarda Pera (USA) bt Aryna Sabalenka (BLR) 6-4, 2-6, 6-3

Carla Suarez Navarro (ESP) bt Barbora Strycova (CZE) 6-3, 6-3

Maria Sharapova (RUS) bt Mihaela Buzarnescu (ROU) 6-4, 6-1

Zhang Shuai (CHN) bt Naomi Osaka (JPN) 6-1, 7-5

Anastasija Sevastova (LAT x15) bt Anna Karolina Schmiedlova (SVK) 6-3, 4-6, 6-3

Ashleigh Barty (AUS) bt Sara Errani (ITA) 6-1, 6-4

Caroline Wozniacki (DEN x2) bt Daria Gavrilova (AUS) 6-3, 6-1

Men first round

Richard Gasquet (FRA) bt Tomas Berdych (CZE x14) 6-4, 6-2

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Denis Shapovalov (CAN) bt Tennys Sandgren (USA) 6-1, 6-4

With inputs from AFP