Andy Murray admitted he has a lot of thinking to do following his thumping loss to Roger Federer at the World Tour Finals.
Murray faced off against Federer knowing that he needed a straight sets win to advance to the semi-finals.
However that never looked like happening as the Scot won just eight points in the first set and didn’t win a game until he was 6-0 5-0 down.
World number two Federer wrapped up the 6-0 6-1 victory in 56 minutes, leaving Murray with plenty to ponder as his World Tour Finals involvement came to a disappointing end.
"It has not really happened to me before like that where winning games has been an issue," said Murray, who last lost by the same margin against Novak Djokovic in Miami back in 2007.
"I've had tough losses and heavy defeats but nothing quite like that.
"It's very frustrating, when I'm trying my best. I've never been in that position before in my whole career.
"Maybe I need to make some changes to my game, but that's the one good thing - I have time now to do that."
© Sportsbeat 2014