Roger Federer lost to Daniel Brands 6-3, 6-4 Thursday in the second round of the Swiss Open, his third straight tournament exit against a low-ranked opponent.
Federer had trouble handling the serves of the 55th-ranked German. Federer's others losses in the past month were to players ranked Nos. 116 and 114.
The Swiss star is now ranked No. 5, his lowest in a decade since he started his run of 17 Grand Slam singles titles at Wimbledon in 2003.
Federer saved a first match point by serving an ace when trailing 5-3, and a second in the next game with a forehand winner.
Brands then clinched victory with a service winner.