Roger Federer of Switzerland hits a shot during his match against Federico Delbonis of Argentina during the BNP Paribas Open at the Indian Wells Tennis Garden of the Czech Republic in Indian Wells. Pic/AFP

World number one Roger Federer picked up where he left off, winning the four games he needed to defeat Federico Delbonis on Sunday after their match was interrupted the night before by rain. Federer returned to stadium court on Sunday afternoon and needed an hour to finish off his second round victory 6-3, 7-6 (8/6). His title defence got off to a soggy start Saturday night when play was suspended because of rain showers with Federer up a set and tied 2-2 in the second.