Roger Federer remains firmly on course to defend his ATP World Tour Finals title by brushing aside David Ferrer in the semi-finals.

31990 - Classy Federer much too good for Ferrer

Federer has been in sizzling form in recent weeks and after easing through his group, he proved much too good for his Spanish opponent - winning 7-5 6-3.

With Andy Murray, Rafael Nadal and Noval Djokovic falling by the wayside, only Jo-Wilfried Tsonga or Tomas Berdych stand between Federer and a sixth Tour Finals title.

Ferrer beat world No. 1 Djokovic to book his place in the semi-finals, but he could not repeat the dose against the game's in-form player.

It was a tense opening, with both players producing strong service holds. Federer worked a break point in the fifth game of the match but Ferrer found a first serve and had the confidence to come in behind a backhand and play a great low volley as he went on to hold.

Ferrer held with confidence in the ninth game and had the first semblance of a chance in the following game when Federer pulled a forehand wide to take the game to deuce. The Spaniard had a look at a couple of second serves in a marathon game but failed to convert.

And as is so often the case, after staving off a threat Federer stepped up his play to break. He advanced behind a superb wrong-footing forehand to put away a volley. Having got his nose in front in the game, Federer soaked up the pressure before springing from defence into attack. He absorbed some big drives from Ferrer before flicking a lob over his rival and putting away a volley to set up break points. And with the pressure on, Ferrer blinked by throwing a forehand wide.

Having secured the break, Federer made his rival pay by holding serve to claim the opening set.

If Ferrer wanted to stem the tide, he failed to do so as a crushing forehand earned Federer a break at the start of the second set.

Ferrer held to stop the rot at 2-1 but he could make no impact on the Federer serve. And under sustained pressure, he cracked for a second time with the Swiss converting his second match point with a crunching forehand.

The win moved Federer into the 100th tour-level final of his career and guarantees he will finish the year as world No. 3 - ahead of Murray.