Top seed Simona Halep has booked her place in the last 32 at ongoing Australian Open after the Romanian defeated Eugenie Bouchard of Canada 6-2 6-2 in their 2nd round clash.

Five-time Grand Slam champion Maria Sharapova is also through to the third round after beating 14th seeded Latvian Anastasija Sevastova in straight sets.

The Russian was beaten in three sets by the Latvian at the US Open last year and she got her revenge with a 6-1 7-6 (7-4) victory in one hour and 20 minutes to set up a meeting with Angelique Kerber who saw off Donna Vekic of Croatia 6-4 6-1 to celebrate her 30th birthday.

On her win, Sharapova said: “I’m happy to get through on a day like this.”

“When she broke back I thought: ‘Oh, it’s going to be three sets again’.” she added.

Sixth seeded Czech Karolina Pliskova is also through after beating Beatriz Haddad Maia of Brazil 6-1 6-1 in 44 minutes to set up a last 32 meeting with compatriot Lucie Safarova, who defeated Romanian Sorana Cirstea 6-2 6-4.

American Madison Keys has qualified for the last 32 following a 6-0 6-1 win over Ekaterina Alexandrova of Russia in 41 minutes.

Croatian 28th seed and 2017 semi-finalist Mirjana Lucic-Baroni was beaten in the second round 6-3 6-1 by Aliaksandra Sasnovich of Belarus, who will now play Caroline Garcia for a last 16 place after the French eighth seed prevailed 6-7 (3-7) 6-2 8-6 over Czech Marketa Vondrousova.

Elena Vesnina became the 10th of the top 16 women’s seeds to bow out by the second round with her 7-6 (7-4) 6-2 loss to Japanese 20-year-old Naomi Osaka .

2-time semi-finalist Agnieszka Radwanska of Poland needed three sets to see off Ukraine’s Lesia Tsurenko with a 2-6 7-5 6-3 victory.

The 26th seeded Polish will now play Hsieh Su-Wei of Taiwan for a place in the last 16 after the world number 88 stunned Wimbledon champion Garbine Muguruza 7-6 (7-1) 6-4.