US Open 2015: Roger Federer 'still feels young'

Roger Federer says he still feels young enough to play "fun tennis" after advancing to the US Open semi-finals.

Seventeen-time Grand Slam champion Federer did not face a single break point as he beat Frenchman Richard Gasquet 6-3 6-3 6-1 in just 87 minutes.

Federer will now meet his Swiss compatriot Stan Wawrinka for a place in the final at Flushing Meadows, with top seed Novak Djokovic facing reigning champion Marin Cilic in the other semi.