Agnieszka Radwanska has comfortably secured a place in the quarter-finals of the Madrid Open by defeating Roberta Vinci 6-1 6-1 in the third round.
The Polish international earned an early break of serve in the opening set to put her opponent on the back foot.
Vinci came close to holding her serve in the sixth game, but once again Radwanska's strength saw her through to clinch the set.
The second set became a formality for Radwanska, as she secured three breaks of serve to ease into the next round of the tournament.
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