MONTE CARLO, Monaco, April 25 (UPI) -- The world's four top-ranked men's tennis players won quarterfinal matches Friday in the Masters Series tournament in Monte Carlo, Monaco.
Twelve-time Grand Slam champion Roger Federer, who won is first title of the year last week in Portugal, dropped the opening set to David Nalbandian, then charged back to eliminate the Argentine 5-7, 6-2, 6-2.
The world No. 1 Swiss star's semifinal opponent will be No.3 Novak Djokovic, who advanced with a 6-4, 6-0 win over unseeded American Sam Querrey.
World No. 2 Rafael Nadal of Spain, who has captured the Monte Carlo title three years in a row, and No. 4 Nikolay Davydenko will clash in the other semifinal.
Nadal moved on with his 18th consecutive match win at Monte Carlo, a 6-1, 7-5 decision over countryman David Ferrer, and Davydenko beat fellow Russian Igor Andreev 6-3, 4-6, 7-
The tournament champion will collect $570,000.
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