By Matthew Cronin
"But of course this win will give me a lot of confidence beating Andy in his country. It's special."
World number seven Roddick started strongly, adeptly mixing up his attack to break the Spaniard twice and win the first set.
But the irritable American then struggled to find enough pace on his shots in the last two sets, and after being broken early in the second, received a code violation for belting a ball way up into the stands when he missed a passing shot.
He fought off two set points at 5-4, but the left-handed Verdasco sealed the second set with an ace.
The two went it at tooth and nail in the third set, but Roddick couldn't contend with Verdasco's powerful first serves and was less powerful off the ground.
The Spaniard broke to lead 5-4 after threading a low backhand pass, then served out the match with another thumping ace.
"I served very well and I don't think Andy served his best today," said Verdasco, who notched 15 aces to Roddick's 10.
(Editing by Ian Ransom)