Fitness permitting, Andy Murray will take on Tomas Berdych in his second match at the ATP World Tour Finals in London tomorrow afternoon.
The 24-year-old will decide later today whether he will be fit enough to continue in the tournament having aggravated a groin injury during a defeat to David Ferrer yesterday afternoon.
Should Murray decide to withdraw, his place in the competition will be taken by Janko Tipsarevic.
Spaniard Ferrer will face Novak Djokovic, who beat Berdych last night, in Group A's other fixture.
