Jankovic into quarter-finals

Top seed Jelena Jankovic booked her place in the last eight of the Monterrey Open with a straightforward victory over Austria's Sybille Bammer.

Serbian Jankovic, the world number six, eased to a 6-3 6-4 win over her unseeded opponent to book a quarter-final meeting with fifth-seeded Latvian Anastasija Sevastova, who progressed after a 2-6 6-2 6-4 win over Alize Cornet of France.