Defending champion Sabalenka into Miami last 16
Aryna Sabalenka's bid to complete the 'Sunshine Double' continued as she swept past Caty McNally to reach the last 16 of the Miami Open.
World number one Sabalenka is aiming to become only the fifth woman to win at Indian Wells and Miami in the same year.
Having lifted the first of those titles in California this month, Belarusian Sabalenka extended her winning streak to eight matches with a 6-4 6-2 victory over American McNally.
They twice exchanged breaks of serve before Sabalenka broke again to take the opening set, then won four straight games from 2-2 in the second.
The defending champion will face China's Zheng Qinwen on Monday.
Zheng beat American 15th seed Madison Keys to claim her firstwin over a top-20 player since having elbow surgery in July.
Sabelenka has won seven of her eight meetings with Olympic champion Zheng.
Third seed Elena Rybakina cruised into the last 16 with a 6-3 6-4 victory over Ukraine's Marta Kostyuk.
Kazakhstan's Rybakina will play Australian qualifier Talia Gibson, who knocked out another seeded player courtesy of a 6-2 6-2 win over 18th seed Iva Jovic.
Gibson, who reached the Indian Wells quarter-finals, beat former world number one Naomi Osaka in the second round in Miami.
Fifth-seeded American Jessica Pegula, runner-up to Sabalenka last year, needed only an hour and six minutes to beat Canada's Leylah Fernandez 6-2 6-2.
Latvia's Jelena Ostapenko, runner-up in Miami in 2018, fought back to claim a 5-7 6-2 7-5 win over seventh seed Jasmine Paolini of Italy.
Ostapenko will next play American world number 45 Hailey Baptiste, who beat Ukrainian ninth seed Elina Svitolina 6-3 7-5.
