Vienna, Austria (4E Sports) – Top seed Jo-Wilfried Tsonga continued his push for a spot in the ATP World Tour Finals, beating Daniel Brands, 7-5, 1-6, 6-3, in his opening match Thursday at the Erste Bank Open.
The Frenchman, who currently holds the final qualifying spot in the ATP Race To London, dropped serve twice in the second set, but regrouped to close out the one hour, 33-minute victory.
In the quarterfinal, Tsonga next faces Austrian wild card Dominic Thiem, who advanced with a 6-1, 6-1 win over Czech lucky loser Jaroslav Pospisil.
Former champion Tommy Haas defeated Miloslav Mecir, 7-5, 7-6(8), to advance against fifth seed Radek Stepanek. Other winners were Fabio Fognini, Robin Haase and Philipp Kohlschreiber.
In Stockholm, top seed David Ferrer opened his If Stockholm Open campaign with a 4-6, 6-3, 6-1 win over Jack Sock.
Fifth seed Ernests Gulbis later joined Ferrer in the quarterfinal after beating Igor Sijsling 6-3, 7-6(3) in 79 minutes.
Elsewhere, Kenny De Schepper defeated fourth seed Kevin Anderson, Grigor Dimitrov downed Jan-Lennard Struff, Kenny De Schepper ousted Kevin Anderson and Milos Raonic eliminated Joachim Johansson.
In Russia, top seed Richard Gasquet started his quest to clinch the Kremlin Cup with a 6-3, 3-6, 6-1 win over Evgeny Donskoy.
Gasquet will contest his 11th tour-level quarterfinal of the year against wild card Teymuraz Gabashvili, who beat Dudi Sela, 6-1, 6-7(7), 6-1.
Ivo Karlovic hit16 aces to defeat fifth seed Denis Istomin, 6-3, 6-7(10), 7-6(6) while fourth seed Alexandr Dolgopolov defeated qualifier Mikhail Kukushkin, 6-4, 6-4.
On the women’s side, fourth seed Ana Ivanovic ousted Klara Zakopalova, 6-3, 6-1, to make it to the quarterfinal of the Kremlin Cup.
Next up for Ivanovic is seventh seed Sam Stosur, who won nine of 10 games from 3-4 in the first set to beat Alizé Cornet, 6-4, 6-1.
In other matches, Daniela Hantuchova prevailed over Serbian qualifier Vesna Dolonc, 3-6, 6-4, 6-4 while fifth seed Simona Halep advanced after Magdalena Rybarikova retired in the second set due to respiratory illness.
Meanwhile, second seed Sloane Stephens beat Yvonne Meusburger, 7-5, 6-4, to book a spot in the quarterfinal round of the Luxemborg Open.
Other winners were Karin Knapp, Sabine Lisicki and Stefanie Voegele.