Rafael Nadal says he has no idea when he'll make his comeback from knee injury

LONDON - Rafael Nadal still has no timetable for his return from a knee injury.

The Spaniard hasn't played since losing in the second round of Wimbledon in June to little-known Lukas Rosol.

The 11-time Grand Slam champion is recovering from a partially torn patella tendon in his left knee.

In interviews with European newspapers Tuesday, Nadal says he's not sure how soon he'll be back or whether he'll play in the Australian Open in January.

He could miss the ATP World Tour Finals in London Nov. 5-12 and Spain's Davis Cup final against the Czech Republic Nov. 16-18.

Nadal says "this is a day-to-day thing. I can't predict what will happen."