Rafael González wins on his return to singles competition . The former world No . 1 defeated Argentine Federico Delbonis 6 - 3 6 - 2 . The 11-time grand slam champion has been out for seven weeks with a back injury . The Spaniard makes his return in a doubles victory on Tuesday .
Rafael Nadal wins on his return to singles action . The former world No . 1 beats Argentine Federico Delbonis 6-3 6-2 . The 11-time grand slam winner has been out for seven months with a knee injury . The Spaniard made his return in a doubles victory on Tuesday .