Roger Federer recovered from an erratic start to beat Arnaud Clement 7-6 (7-5) 6-2 and reach the semi-finals of the Estoril Open in Portugal.
Federer plays defending champion Albert Montanes next, after the fourth-seeded Spaniard defeated Pablo Cuevas 6-4 6-3.
Fifth-seeded Guillermo Garcia-Lopez advanced after Alberto Martin retired with the score at 6-0 2-0.
There were upsets in both of the women's semifinals, as Arantxa Parra Santonja of Spain overcame second-seeded Sorana Cirstea of Romania 6-1 6-4, and Anastasija Sevastova of Latvia rallied to beat world No.7 Peng Shuai of China 6-7 (8-6) 6-1 6-3.
