Federer rebounds against Thiem

Roger Federer staved off elimination from the ATP Finals as the six-time champion eased to a 6-2, 6-3 win over Dominic Thiem on Tuesday.

After losing his opening match at London's O2 Arena against Kei Nishikori, Federer would have crashed out if he had been beaten by Thiem. Only once before has Federer failed to qualify from his group for the knockout rounds in his 15 previous appearances at the prestigious season-ending event.

That lone flop came 10 years ago and Federer is still in with a chance of avoiding that ignominious fate thanks to his comfortable 66-minute dismissal of Thiem.

Bidding for a record seventh ATP Finals crown and a first in the tournament since 2011 -- which would be the 100th singles title of his glittering career -- world number three Federer must beat Kevin Anderson in his last match to make the semis.

"It feels good. I am very happy that I showed a reaction after the last match," Federer said. "Against Kei, instead of seeing things positively, I thought negatively. It was disappointing but it happens.

"Today I was more positive and happy on the court. I love playing in London and I had to remind myself what a privilege it is. I hope I showed it."

Since winning his 20th Grand Slam title at the Australian Open in January, Federer has been stuck in a prolonged slump by his sky-high standards. A quarterfinal exit at Wimbledon was followed by a stunning US Open last 16 defeat to Australian journeyman John Millman.

Federer also hit back at claims he gets preferential treatment at tournaments due to his status as one of the all-time greats.