Roger Federer found Benjamin Becker "tough" to beat

Roger Federer
© PA Photos
Roger Federer admits that he struggled against Benjamin Becker in the first set of their Swiss Indoors first-round contest.

Roger Federer has admitted that he found it "really tough" to win the first set against Benjamin Becker in their Swiss Indoors first-round clash.

The world number one won the contest 7-5 6-3 in one hour and 28 minutes, but missed on six break points in the opening set and went down a break in the second against the German, who replaced injured Frenchman Jeremy Chardy for the clash.

"I was well-prepared to play Becker instead of Chardy," said Federer.

"You have to keep the game of these guys in mind. You don't play them that much but you need to know how they play.

"I don't know exactly how I changed it around. He broke me at 2-3 but I was able to get it straight back. It all went so fast at the end, but the first set was really tough."

Federer will take on either Thomaz Bellucci or Go Soeda in the second round.

Roger Federer
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ATP RankingsPoints
1Scotland flag Andy Murray7,750
2Spain Rafael Nadal7,555
3Switzerland Roger Federer7,145
4Switzerland Stanislas Wawrinka5,780
5Serbia Novak Djokovic5,325
6Croatia Marin Cilic5,155
7Alexander Zverev4,470
8Austria Dominic Thiem4,030
9Japan Kei Nishikori3,285
10Canada Milos Raonic3,230
11Bulgaria Grigor Dimitrov3,070
12France Jo-Wilfried Tsonga2,770
13Belgium David Goffin2,560
14Spain Roberto Bautista Agut2,425
15Czech Republic Tomas Berdych2,390
16United States Jack Sock2,335
17Pablo Carreno Busta2,305
18Lucas Pouille2,220
19United States John Isner2,110
20United States Sam Querrey2,060