With cow bells echoing around Qi Zhong stadium, Federer struggled at first to impose himself on Davydenko, an opponent he had beaten in all their previous 10 meetings.
Federer, who is bidding to win a fourth title in the last five years at the tournament, did just enough to take a scrappy first set despite 22 unforced errors.
He broke to lead 5-3, promptly dropped his own serve but restored normal service in the next game, breaking again to win the set when Davydenko blew an easy smash.
Federer raised his game in the second, a forehand rocket giving him a 3-1 lead, and he quickly put Davydenko out of his misery to kick-start his title challenge.
Davydenko, who will be involved in the Davis Cup final starting later this month, already has his getaway planned once his Masters Cup commitments are over with.
"I fly to the Maldives on Sunday for one week for a rest," said Davydenko, who this week won his appeal against a $2,000 fine for not trying hard enough during a match.
Gonzalez suffered a letdown after his upset over Federer, Roddick steam-rolling the Chilean in just 65 minutes to reach the semi-finals for the third time in four appearances.
"Some days you have good days where everything feels pretty clean," said Roddick, who will play for the U.S. in the Davis Cup final in Portland, Oregon. "This was one of those."
Roddick insisted there would be no fear factor for him playing against Federer despite a daunting record against the Swiss maestro.
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2020-09-15
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