Li Na and Maria Sharapova secure their spot in the semifinals with victories over Agnieszka Radwanska and Elena Makarova.

Nicolas Almagro leads by two sets to love, serves three times for the match, but falls to David Ferrer in 5 sets. Nerves anyone?
Disappointing performance by Tomas Berdych who loses to gluten-free Djokovic in 4 sets.

Agnieszka Radwanska and Li Na qualifies for the quarterfinals.
5th seed Angelique Kerber loses to Ekaterina Makarova in straight sets. Her next opponent: Maria Sharapova who dispatched Kirstens Flipkens 6-1 6-0.

On the men’s side, David Ferrer schools Kei Nishikori and will meet fellow countryman Nicolas Almagro in the quarters. Berdych beats Kevin Anderson.

Stanislas Wawrinka leads 6-1 5-2, serves to lead 2 sets to love, and then is a break up in the fifth set but Djokovic recovers to win 1-6 7-5 6-4 6-7 12-10 in about 5 hours. But of course he’ll be up and running in the next round, we all know his secret: his gluten-free (sarcasm on).

Day 8 matches to follow:
Caroline Wozniacki-Svetlana Kuznetsova
Victoria Azarenka-Elena Vesnina
Serena Williams-Maria Kirilenko
Bojana Jovanovski-Sloane Stephens
Jo-Wilfried Tsonga-Richard Gasquet
Milos Raonic-Roger Federer
Jérémy Chardy-Andreas Seppi
Gilles Simon-Andy Murray

Seeds upset: Ekaterina Makarova defeats Marion Bartoli 6-7 6-3 6-4, Kevin Anderson defeats 2009 semifinalist Fernando Verdasco 4-6 6-3 4-6 7-6 6-2.