Rafa Nadal brushed off talk of retiring anytime soon after the 22-times Grand Slam champion was stunned by Cameron Norrie in the United Cup mixed team tournament on Saturday, saying he still enjoyed competing at the highest level. Nadal’s preparations for his Australian Open title defence got off to a shaky start as Norrie beat him 3-6 6-3 6-4 to seal his first victory over the 36-year-old Spaniard in their fifth career meeting.