The Swiss world No 2, bidding for a record-extending seventh title at the end-of-season finale, dished out yet more punishment to Ferrer in a 6-4 7-6 victory at London's O2, taking his career record over the tenacious Spaniard to 14-0.
Ferrer, darting around the court in his fluorescent lime green top, hung on to Federer's coat tails in the second set to bring the match into a tiebreak, but the Swiss maestro's serve then clicked into gear after something of an off day and he marched into a 6-3 lead.
Still Ferrer refused to accept the inevitable, saving two match-points, but there was no escape as Federer clinched his place in the semi-finals with one round-robin match to spare.
Steffon Armitage has been cleared of doping charges by a French Rugby Federation disciplinary panel, the player's representatives have confirmed.
Tommy 'Two Gloves' Gainey (37), winner of his first PGA Tour title at last month's McGladrey Classic, has got straight back into top gear at the Children's Miracle Network Classic.
Gainey -- along with Camilo Villegas -- fired a seven-under round of 65 on the Palm Course at Disney World in Florida to lie one shot behind leader Charlie Wie.
Bradley Wiggins and his coach Shane Sutton have been injured in two separate road accidents in the space of just 15 hours.
Wiggins, winner of the Tour de France, was released from hospital after suffering a bruised hand and ribs when he was struck by a van as it left a garage forecourt on Wednesday.
Sutton, head coach of British Cycling, was knocked off his bike and suffered a head injury while riding on a main road in Manchester, yesterday morning.
The 55-year-old Australian, who has helped nurture Wiggins' talent since the early years of his career, suffered a small bleed on the brain and was in hospital.