Basel, Switzerland (SportsNetwork.com) - Two of this week's top-four seeds
-- Tomas Berdych and Stanislas Wawrinka -- suffered opening-round upsets
Tuesday at the $1.955 million Swiss Indoors tennis event.
Towering Croat Ivo Karlovic toppled the second-seeded Berdych 4-6, 7-6 (7-4),
7-6 (7-2), while Frenchman Edouard Roger-Vasselin took out the fourth-seeded
Wawrinka 6-4, 6-3 at St. Jakobshalle. Karlovic and Berdych combined for 34
aces, including 23 from the powerful Croat.
Sixth-seeded Japanese Kei Nishikori, the 2011 Basel runner-up, avoided an
upset by tackling Swiss wild card Marco Chiudinelli 6-2, 6-4, while another
upset came when German Daniel Brands dismissed seventh-seeded Italian Andreas
Seppi 7-6 (7-3), 6-3.
In other first-round action, Uzbekistan's Denis Istomin topped Argentine
Horacio Zeballos 7-5, 7-6 (7-3), Croat Ivan Dodig was beating Carlos Berlocq
2-0 in the opening set when the Argentine retired, and Marcos Baghdatis
grounded German qualifier Benjamin Becker 7-6 (10-8), 6-1. The former
Australian Open runner-up Baghdatis was a Basel finalist in 2005.
In some more opening-round action here on Wednesday, top-seeded and defending
champion Juan Martin del Potro will take to the court, while a second-round
affair will pit third-seeded former world No. 1 Swiss icon Roger Federer
Federer is a five-time Basel champion and four-time runner-up, with the his
last title coming in 2011. He lost to his fellow former U.S. Open champ del
Potro in last year's marquee finale.
The 2013 Basel winner will earn $475,000.
The Sports Network