Valencia, Spain – On-the-mend American Sam Querrey stunned seeded Jo-Wilfried Tsonga, while former U.S. Open champion Juan Martin round match Thursday at the $1.905 million Valencia Open 500 tennis event.
The 116th-ranked Querrey, playing his first tennis since mid-June after having elbow surgery, doused last week's Vienna titlist Tsonga in 7-6 (7-5), 6-2 fashion on the indoor hardcourts at Valencia's City of Arts and Sciences. The world No. 8 Tsonga is trying to qualify for the season-ending ATP World Tour Finals in London later this month.
Up next for Querrey will be a sixth-seeded del Potro, who got past South African and fellow towering slugger Kevin Anderson 6-4, 6-4.
Spanish hero Juan Carlos Ferrero held off rising American Alex Bogomolov Jr. 7-6 (7-3), 4-6, 6-2 in 2 hours, 51 minutes. The 31-year-old former world No. 1 and former French Open champion Ferrero was the Valencia champion back in 2003.
Ferrero will face gritty Argentine Juan Monaco in Friday's quarterfinals.
In other second-round play, Monaco mauled Italian Fabio Fognini 6-3, 6-1 and Spaniard Marcel Granollers cooled off last week's St. Petersburg champion Marin Cilic of Croatia in come-from-behind style, 3-6, 6-3, 7-5. Granollers was last year's Valencia runner-up to fellow Spaniard David Ferrer, this week's top seed. Ferrer also titled here in 2008 and was the runner-up in 2005.
Granollers will encounter third-seeded French star Gael Monfils on Friday.
The 2011 Valencia titlist will collect $455,000.