Berdych, Del Potro win in Rotterdam
Both Berdych and Rosol won singles ties at the weekend as they helped their country into the Davis quarter-finals and a date with Serbia. But Berdych, seeded second, showed his clear superiority in the clash between countrymen.
Third seed Juan Del Potro made a winning debut as he played the event for the first time as he put out 2008 champion Michael Llodra 6-4, 6-7 (3/7), 6-4. The Frenchman, ranked 47th, was fighting jet-leg after flying in from France's 4-1 Davis Cup victory at the weekend over Canada in Vancouver, nine time zones away.
In other first round results, Marcos Baghdatis beat German Matthias Bachinger 7-6 (7/2), 6-2 while Russian Alex Bogomolov advanced as Sergiy Stakhovsky quit injured trailing 6-3, 0-1.