Former NCAA champion Bradley Klahn beat Wake Forest freshman Noah Rubin 6-2, 0-6, 7-6 (5) in the first round of the Winston-Salem Open on Sunday night.
Fifth-seeded Dominic Thiem defeated Joao Souza of Brazil 7-6 (4), 3-6, 7-5 in a rain-soaked first-round match at the Bet-at-Home Cup on Monday.
Top-seeded Fabio Fognini rallied to defeat Borna Coric of Croatia 5-7, 7-6 (4), 6-3 in the quarterfinals of the Croatia Open on Friday.
Defending champion Tommy Robredo beat fellow Spaniard Albert Ramos-Vinolas 6-4, 6-4 on Wednesday to reach the quarterfinals of the Croatia Open.
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.
Grigor Dimitrov overcame a slow start and sweaty hands to beat 45th-ranked Edouard Roger-Vasselin of France 4-6, 6-3, 6-4 in the first round of the Italian Open on Monday.
Defending champion Novak Djokovic of Serbia raced into the Monte Carlo Masters quarterfinals on Thursday, dispatching Pablo Carreno Busta 6-0, 6-1 in just 47 minutes.
Roger Federer was happier than eight-time champion Rafael Nadal after their straight-sets wins to reach the Monte Carlo Masters third round on Wednesday.
Eighth-seeded Guillermo Garcia-Lopez of Spain beat third-seeded Benoit Paire of France 7-5, 7-6 (4) on Friday to reach the semifinals of the Grand Prix Hassan II.
Third-seeded Benoit Paire of France made a winning return from injury as he beat Albert Montanes to reach the quarterfinals of the Grand Prix Hassan II.
Top-seeded Kevin Anderson of South Africa lost to Victor Hanescu of Romania 6-4, 6-4 Wednesday in the second round of the Grand Prix Hassan II.
Third-seeded Tommy Robredo reached the second round of the Copa Claro clay court tournament with a 6-4, 6-4 win over fellow-Spaniard Pablo Carreno Busta on Monday.
Top-seeded Fabio Fognini of Italy defeated Aljaz Bedene of Slovenia 6-4, 7-6 (0) on Thursday to reach the quarterfinals of the Royal Guard Open.