LONDON(AP) With this year's ATP World Tour finals featuring a list of the usual eight players for the year-ending tournament, Roger Federer is among those wondering when the next great tennis talent will come along to shake up the world rankings.
The tournament starts Sunday with only one newcomer - Tomas Berdych - in the field. Federer doesn't expect the lineup to change much over the coming years.
Federer says there is ``not a whole lot'' of young talent coming up on the ATP circuit, and that it's getting harder for teenagers to break into the sport's elite.
Federer plays David Ferrer of Spain in his first group-stage match on Sunday.