Nov.02 - SportLand: Rafael Nadal has warned Roger Federer he's not going to take his foot of the pedal after guaranteeing the world No 1 spot. The Spaniard has reached the final at the O2 twice but has never won the competition.
And in a Twitter video released yesterday, Nadal vowed not to relax after winning the year-end race. Nadal said on his official Twitter page: "Hello everybody guys. It's an mportant day.
"Today I confirmed I'm going to be the no.1 at the end of the season so it's an important achievement for me after all the things that have happened over the last couple of years. "It means a lot to me. When I receive this trophy in London it'll be a very special moment.
"Without all of you it wouldn't be the same, of course. Thanks for all the support always. "The season is not over. We're going to try our very best in the last two events."