Radwanska cruises in Miami opener

Reigning champion Agnieszka Radwanska continued her winning ways in Miami with an easy second-round victory Thursday at the Sony Open tennis event.

The fourth seed rolled past Taiwan's Su-Wei Hsieh 6-3, 6-2 at Crandon Park.

The Wimbledon runner-up Radwanska beat French Open titlist Maria Sharapova in last year's Miami finale.

Also on Day 3, fifth-seeded Australian Open runner-up Li Na whipped Dutchwoman Kiki Bertens 6-3, 6-1.

The winner of this 13-day, $4.196 million tournament will earn $724,000.