Ostapenko upsets Stosur

The first quarter finals were set on Day 8 at Roland Garros, and surprisingly 2016 champ Garbine Muguruza won't be one of the final eight.  French fans were elated to see Kiki Mladenovic win the day in a thrilling three setter.  Next for the 13th seed is Timea Bacsinszky, who eliminated 10th seed Venus Williams after dropping the opening set.  

Bacsinszky dominated Williams for the remainder of the match, hitting 19 winners and winning 63 points to 40.

The other quarter final decided will be a clash between 11th seed Caroline Wozniacki and unseeded teenager Jelena Ostapenko.  Ostapenko recovered from 0-5 in the first set against Samantha Stosur, and eventually losing that set, to overwhelm the Australian 2-6 6-2 6-4.

Wozniacki proved too strong for 8th seed Sveta Kuznetsova in the opening set but the two time Grand Slam champ pushed Wozniacki to a decider with the type of tennis that saw her lift the Roland Garros trophy in 2009.

Wozniacki steadied and played an excellent third set, committing only two unforced errors and winning 60% of points on the Kuznetsova serve.

Rafa Nadal and Novak Djokovic are only one match each away from the eagerly awaited semi final.  Nadal has dispatched one compatriot easily - Roberto Bautista Agut 6-1 6-2 6-2.  His quarter final opponent is Pablo Carreno Busta.  This Spaniard took over four hours to defeat fifth seed Milos Raonic, the final set 8-6. 

Novak's task is potentially tougher, needing to overcome Dominic Thiem.  Djokovic defeated Albert Ramos-Vinolas in straight sets.  Thiem continued his dominant form in this tournament by thrashing Horacio Zeballos in the fourth round.