Serena Williams has enforced her position in the second round of the Madrid tournament.

The World No. 1 dominated in two sets the Spanish Loudres Dominguez Lino (World 47) 6/2, 7/5 in 1hour 25.

In the eighth final of the Madrilenian Masters 1000, the top seed No. 1 will face the French Kristina Mladenovic or the Russian Maria Kirilenko.