Roddick's victory sees him regain the title he first won back in 2004
Andy Roddick ended a four-year wait for his fifth Masters 1000 title with victory over Czech Tomas Berdych in the final of the Sony Ericsson Open.
The American, seeded sixth, won 7-5 6-4 to claim his 29th career title and his first at the elite Masters level since Cincinnati in 2006.
Roddick, who made the final in Indian Wells last month, has more match wins than any other player in 2010 with 26.
And the 2004 champion becomes only the fifth man to win the Miami title twice.
Roddick joins Andre Agassi (6), Pete Sampras (3), Roger Federer (2) and Ivan Lendl (2) as multiple winners in Florida.
I've been able to have a game plan and execute it regardless of what kind of shots it takes
"Obviously it's a big title for me," he said. "I felt a little bit of pressure to win this one, because I had a pretty good opportunity in Indian Wells and didn't come through there. I think just the last month has been real good for me."
Berdych, 24, had enjoyed a superb run to the final that included victories against Federer, Fernando Verdasco and Robin Soderling.
It was a return to the kind of form that had once seen him tipped for great things, and took him to his biggest title to date at the 2005 Paris Masters.
But former world number one Roddick had given an attacking masterclass in his semi-final win over Rafael Nadal and both men began the final looking sharp.
The opening 10 games passed without a single break point for either man, and it was Berdych who faltered first with a couple of loose forehands giving Roddick a break point.
Berdych made amends with a fizzing forehand into the corner but then double-faulted and went long on the second break point, allowing Roddick to serve out the set to love with an ace.
The American kept the pressure up at the start of the second, his sliced backhand drawing the errors as Berdych gave up an early break of serve with a forehand that sailed over the baseline.
Confidence was now flowing through Roddick and he serve-volleyed for the first time - having done so to great effect against Nadal - as he moved 2-0 clear.
And there were to be no alarms for the 2003 US Open champion as he served his way towards the finish line without facing a break point all day.
Berdych fended off two match points on his own serve in game nine but Roddick then took his chance and wrapped things up after one hour and 43 minutes.
"I've played well on the big moments," Roddick said of his recent run.
"I haven't had an off day mentally, I've been able to execute. I've been able to have a game plan and execute it regardless of what kind of shots it takes, so it's all good."
Berdych admitted: "He was really good today. He was really strong, serving well. I was looking to get one chance but he held pretty well. I didn't get a chance during the whole match."