The world tennis number three Andy Murray is considering pulling out of the ATP World Tour Finals after just one match.
The Scot needed treatment on a groin injury after losing the first set of his opening group match to the Spaniard David Ferrer who wrapped up the match 6-4 7-5.
Murray suffered the injury in practice and having arrived in London after a recent 17-match winning-streak, he was downcast about being able to continue in the season-ending showpiece.
If he pulls out, he would be replaced by Serbia's Janko Tipsarevic as the first alternate.
