The 10th seed Andrea Petkovic of Germany takes on Spain's Carla Suarez Navarro with a place in the quarter-finals of the US Open at stake.

PETKOVIC 6-1 6-4 - GAME, SET AND MATCH! Petkovic wraps up the match in straight sets, taking it with ease on serve at the second time of asking as Suarez Navarro is unable to muster any further resistance. She advances through to the quarter-finals where she will face either Caroline Wozniacki or Svetlana Kuznetsova.

PETKOVIC 6-1 5-4 - Petkovic's problems mount up as she attempts to close out this match, and Suarez Navarro again reduces the deficit with a solid hold.

PETKOVIC 6-1 5-3 - BREAK! Suarez Navarro grabs a break back as the Spaniard piles the pressure on Petkovic to serve out for the match.

PETKOVIC 6-1 5-2 - Suarez Navarro reduces the deficit with a solid hold, and the Spaniard at least forces Petkovic to close out the match on serve...

PETKOVIC 6-1 5-1 - Petkovic consolidates her break of serve once more to edge closer to taking the match, just one game shy of the quarter-finals!

PETKOVIC 6-1 4-1 - BREAK! It's one-way traffic now for Petkovic, who savages the Suarez Navarro serve once more to establish a 4-1 lead in this second set!

PETKOVIC 6-1 3-1 - Petkovic hammers a forehand down the line as she consolidates her break of serve in the previous game, and the German is romping through the second set.

PETKOVIC 6-1 2-1 - BREAK! Petkovic stamps her authority on proceedings with a clinical break of serve as Suarez Navarro falters, and the German leads once more with the advantage!

PETKOVIC 6-1 1-1 - Petkovic slams a forehand down the line to beat Suarez Navarro's backhand side, and the German levels at 1-1 to get on the board in this second set.

PETKOVIC 6-1 0-1 - Suarez Navarro gets off the mark straight away in this second set as the Spaniard whips two exquisite winners off her forehand side cross court!

PETKOVIC 6-1 - SET! The 10th seed Petkovic seals the opening set in very swift time as she serves out comfortably and ensures that there is no way back for Suarez Navarro!

PETKOVIC 5-1 - BREAK! It's all too easy for Petkovic as Suarez Navarro struggles to find anything on her serve, and she is really struggling in this match! The German is flying through this first set.

PETKOVIC 4-1 - Petkovic consolidates her break of serve comfortably with a forehand cross court, and the German is really thriving in this opening set!

PETKOVIC 3-1 - BREAK! Suarez Navarro sees her serve clinically and ruthlessly broken by Petkovic, who slams successive winners cross court to clinch the break!

PETKOVIC 2-1 - The 10th seed begins to open up now as she fires two clean winners and finds a couple of blistering first serves to stun her opponent!

PETKOVIC 1-1 - Suarez Navarro also gets off the mark immediately with a solid hold, and she finds a good early rhythm on her serve to establish herself in this opening set.

PETKOVIC 1-0 - Petkovic slams a forehand down the line after finding three first serves, and the German starts very strongly.

PETKOVIC 0-0 - The German will serve first after she wins the toss and elects to lead the way...

This pair have only met once previously, with Suarez Navarro prevailing in straight sets at the Australian Open last year. Can the German redress the balance at Flushing Meadows today?