World No.1 woman tennis player Simona Halep from Romania has reached the round of 16 of the Premier 5 tournament after beating Russian Anastasia Pavlyuchenkova in three sets.Halep had to battle against Pavlyuchenkova on Thursday, 28th of the world's ranking, to win 7-6(9), 4-6 and 7-5, reports Efe.The Romanian will play in the next round against 13th seeded American Venus Williams, who on Thursday beat Halep's compatriot, Sorana Cirstea, 7-6 (4), 6-4.