Serena and Venus Williams remain on course to meet in the WTA Dubai final after both claimed victories in the last eight.
Italy’s Flavia Pennetta stunned world number three Agnieszka Radwanska in straight sets to earn a quarter-final spot in Dubai.
Round-up: Serena Williams survived a scare against Ekaterina Makarova before progressing at the Dubai Tennis Championships.
Serena Williams has warned younger rivals she remains as potent as ever before her first competitive match in more than four weeks.
Simona Halep dumped second seed Agnieszka Radwanska out of the Qatar Open to move into the final.
Second seed Agnieszka Radwanska overcame Belgium’s Yanina Wickmayer 6-2 6-1 to move into the last four of the Qatar Open.
WTA round-up: Li Na was ousted from the Qatar Open after being shocked 7-6(2) 2-6 6-4 by Petra Cetkovska in the third round.
Round-up: Li Na and Agnieszka Radwanska were among the big names to progress to the third round of the Qatar Open.
Maria Sharapova was dumped out of the Australian Open fourth round when she suffered a 3-6 6-4 6-1 loss to Slovakia's Dominika Cibulkova.
Order of play on the main showcourts on day eight of the Australian Open on Monday.
Maria Sharapova ran hot and cold before overcoming 25th-seed Alize Cornet 6-1 7-6(6) to advance to the fourth round of the Australian Open.
Round-up: Caroline Wozniacki made an early exit from the Australian Open with a 4-6 7-5 6-3 loss to Garbine Muguruza.
ATP World Tour Finals
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