Madrid: Spain's former tennis world number one Rafael Nadal, who has struggled with a sore left shoulder since the end of last season, said on Sunday he is not sure he will be playing at his peak at the Australian Open later this month.
"I know I am working well, with a much more positive attitude than I had during the second half of last season, especially in the final stretch," he said in an interview published Sunday in Catalan sports daily Sport.
"I see myself capable of having a good tournament but you never know. I am happy with the level of my game, of how I am doing things and I think I am sowing seeds that will bear fruit. But maybe not in Australia."