HAMBURG, Germany (AP) -- Dominic Thiem fought from 5-2 down in the final set and held off a match point before upsetting the eighth-seeded Marcel Granollers 2-6, 6-3, 7-5 in the second round of the Hamburg Open on Tuesday.
The 55th-ranked Austrian saved five of the eight break points he faced and converted three of his 12 chances to defeat the Spaniard in 2 1/2 hours. Granollers, ranked 40 places above Thiem, was granted a first-round bye at the clay-court event.
Thiem is now 2-0 against Granollers after also beating the Spaniard in his native Barcelona in April.
Klizan now faces 2011 winner Gilles Simon of France, while Monaco will play Andreas Seppi of Italy, with the winner taking on top-seeded David Ferrer in the third round. The Spaniard, who accepted a wild card to the tournament, rallied to defeat Mikhail Kukushkin of Kazakhstan 2-6, 6-3, 6-2.
Third-seeded Tommy Robredo of Spain, who won the tournament in 2006, beat compatriot Daniel Gimeno-Traver 6-2, 7-5 for a third-round clash with the 14th-seeded Joao Sousa of Portugal or Lukas Rosol.
Rosol reached the second round when German wild card Julian Reister had to withdraw with the Czech leading 6-4, 2-1.
Poland's Jerzy Janowicz defeated Spanish qualifier Albert Ramos-Vinolas 6-0, 7-5 for a second-round clash with the fourth-seeded Alexandr Dolgopolov of Ukraine. Also, German wild card Alexander Zverev eased past Dutchman Robin Haase 6-0, 6-2 to meet the fifth-seeded Mikhail Youzhny, also given a first-round bye.
Santiago Giraldo of Colombia advanced after defeating Benoit Paire of France 7-6 (6), 6-2 in their second round match.