Fresh from her gold-medal winning performance at the Beijing Olympics, the fifth-seeded Russian breezed past the 15th seed from Switzerland 6-2 6-3 in just 76 minutes.

Dementieva will now face number two seed Jelena Jankovic after the Serbian secured her place in the semi-finals by defeating Sybille Bammer of Austria 6-1 6-4.

Schnyder held her first service game but was broken on her second and, when Dementieva broke again to establish a 4-1 advantage the first set was as good as over.

The second set looked to be following a similar pattern when the Moscow-born player secured an early break to go 3-1 up, but Schnyder battled back well and took advantage of her first break-point opportunity to level matters at 3-3.

However, Dementieva quickly snuffed out any hope her opponent had of getting back into the match by immediately breaking back and racing through the next two games to clinch victory.

Bammer had upset 12th seed Marion Bartoli in the fourth round but their was to be no repeat against Jankovic, who took one hour and 30 minutes to secure the victory.

Jankovic claimed points from all eight of her net approaches while making just 14 unforced errors in comparison to Bammer's 40.