Rafael Nadal marked his return to the Swiss Indoors after a 10-year absence with a 6-2, 6-2 win over Italian qualifier Simone Bolelli in the first round on Monday.
Philipp Kohlschreiber made a winning return from a four-week injury layoff Wednesday, rallying to defeat Carlos Berlocq of Argentina 3-6, 6-1, 6-4 in the second round of the Erste Bank Open.
Carlos Berlocq of Argentina came back from a break down in the second set to defeat Gerald Melzer of Austria 6-3, 7-6 (2) on Monday at the Erste Bank Open.
Argentina's Leonardo Mayer will play Israel's Bar Botzer to open Davis Cup play on Friday.
Belgian qualifier David Goffin defeated defending champion Jurgen Melzer of Austria 6-3, 6-4 Monday in the first round of the Winston-Salem Open, a tuneup for next week's U.S. Open.
Defending champion Tommy Robredo beat fellow Spaniard Albert Ramos-Vinolas 6-4, 6-4 on Wednesday to reach the quarterfinals of the Croatia Open.
Fifth-seeded Lukas Rosol of the Czech Republic needed a late rally to beat 100th-ranked Diego Sebastian Schwartzman 6-3, 3-6, 7-6 (2) in the first round of the Croatia Open on Tuesday.
Serbian qualifier Filip Krajinovic defeated defending champion Fabio Fognini 6-4, 6-0 Wednesday as a host of seeded players crashed out in the second round of the Hamburg Open.
Pablo Cuevas advanced to the Swedish Open final by defeating Fernando Verdasco of Spain 7-6 (6), 6-3 Saturday.
Defending champion Carlos Berlocq upset top-seeded David Ferrer in a 6-3, 6-3 victory at the Swedish Open quarterfinals on Friday.
Top seed David Ferrer led a trio of Spaniards into the Swedish Open quarterfinals by defeating Victor Hanescu of Romania 6-4, 6-0 on Thursday.
Pablo Cuevas of Uruguay won for just the fourth time this year when he ousted sixth-seeded Jeremy Chardy of France 6-2, 6-2 in under an hour in the first round of the Swedish Open on Tuesday.
Top-seeded John Isner of the United States lost 6-4, 5-7, 7-6 (6) to Federico Delbonis of Argentina in the Open de Nice quarterfinals as both players wasted match points on Thursday.
Carlos Berlocq of Argentina and Martin Klizan of Slovakia won three-setters to reach the second round of the Open de Nice on Tuesday.
Carlos Berlocq stormed back to beat top-seeded Tomas Berdych 0-6, 7-5, 6-1 and win the Portugal Open on Sunday for his second career title.