A cramping Marinko Matosevic of Australia suffered a heartbreaking third-set tiebreaker loss to Russian Dmitry Tursunov on Friday in the quarter-finals of the ATP and WTA Washington Open.

Tursunov overcame 13 double-faults with the help of 15 aces to win 6-3 4-6 7-6 (7-4) to reach his second semi-final this season.

The 61st-ranked Tursunov made it to the semis at Washington’s hardcourt tournament for the first time since 2006. He will face eighth-seeded American No.16 seed Marcos Baghdatis of Cyprus.

On Thursday, a week before his 28th birthday, Matosevic downed 13th-ranked Canadian Milos Raonic 7-5 7-6, following earlier good wins over fading big names James Blake and Nikolay Davydenko to set up the clash with Tursunov.

Andrea Petkovic of Germany reached the women’s semi-finals with a 4-6 6-1 6-3 victory over Paula Ormaechea of Argentina.

Petkovic, a former top-10 player whose career was sidetracked by injuries, had lost three of her previous four matches before arriving in Washington.

The 64th-ranked Petkovic will play No.4 Alize Cornet or fifth seed Sorana Cirstea for a berth in the final.