Miami Open: Liu advances to second round as Siniakova quits with wrist injury; Swiatek next

American Claire Liu reached the second round of the Miami Open when Czech Katerina Siniakova retired at the Hard Rock Stadium on Tuesday.

Siniakova was leading 6-3, 3-3 when she pulled out on Tuesday, having earlier had a medical timeout for a wrist injury.

Liu, the 22-year-old world No 56, will play top seed Iga Swiatek next.

Miami WTA 1000, other first-round results (Hard Rock Stadium, hard, USD 8.800.000, most recent results first):

• Sloane Stephens vs. Shelby Rogers
• Anna Blinkova vs. Jule Niemeier
• Robin Montgomery vs. Ana Bogdan
• Aliaksandra Sasnovich vs. Dalma Galfi
• Marketa Vondrousova vs. Tatjana Maria
• Xinyu Wang vs. Anna-Lena Friedsam
• Jil Teichmann vs. Karolina Muchova
• Fernanda Contreras Gomez vs. Sorana Cirstea
• Varvara Gracheva vs. Maryna Zanevska
• Erika Andreeva vs. Ashlyn Krueger
• Amanda Anisimova vs. Madison Brengle
• Lucia Bronzetti vs. Linda Noskova
• Lesia Tsurenko vs. Leylah Fernandez
• Anna Bondar vs. Taylor Townsend
• Sofia Kenin vs. Storm Hunter
• Bianca Andreescu vs. Emma Raducanu
• Bernarda Pera vs. Evgeniya Rodina
• Viktorija Golubic vs. Hailey Baptiste
• Anna Karolina Schmiedlova vs. Viktoriya Tomova
• Mayar Sherif vs. Laura Siegemund
• Katherine Sebov vs. Linda Fruhvirtova: tuesday
• Tamara Korpatsch vs. Tereza Martincova: tuesday
• Camila Giorgi vs. Kaia Kanepi: tuesday
• Elise Mertens beat Alycia Parks: 6-1, 6-4
• Rebecca Marino beat Yulia Putintseva: 7-6 (4), 6-2
• Anna Kalinskaya beat Victoria Jimenez Kasintseva (WC): 6-4, 6-2
• Mirjam Bjorklund (Q) beat Jasmine Paolini: 4-6, 6-4, 6-4
• Xiyu Wang beat Brenda Fruhvirtova (WC): 6-0, 7-5
• Marta Kostyuk beat Elisabetta Cocciaretto: 6-3, 6-2
• Irina-Camelia Begu beat Alexandra Eala (WC): 6-2, 7-5
• Nao Hibino (Q) beat Danka Kovinic: 6-3, 6-3