World number seven Tomas Berdych has withdrawn from the Barcelona Open due to illness, organisers said on Tuesday.
Roger Federer came from a set behind to beat feisty Portuguese Rui Machado, ranked 90 places below him, as he made his Davis Cup return for Switzerland after an absence of nearly two years on Friday.
Top seed Somdev Devvarman struggled past Ramkumar Ramanathan, who was troubled by cramps, but Yuki Bhambri made a fluent start with a straight sets victory in the US$ 50,000 ATP Challenger event, in Chennai.
Union Berlin's Paul Jaeckel scored a 76th-minute winner to give his team a 1-0 victory at VfB Stuttgart on Sunday and send them two points clear at the top of the Bundesliga.