Andy Murray has admitted that he is still plagued by soreness in his left shoulder.

The 27-year-old played through the pain barrier alongside Heather Watson to help Great Britain beat France 2-1 in Hopman Cup earlier today.

"It's a bit sore. If it was my right shoulder it would probably be quite hard for me to play. I don't feel it on my ground strokes so much, I feel it when I'm serving. I had an ultrasound scan in Abu Dhabi and it was absolutely clear but it's still quite sore," he said.

"Hopefully it will calm down. Maybe it's playing matches again after a little break, maybe I've just got it in the wrong position and tweaked something a little bit, but I should be fine."

Murray defeated Benoit Paire 6-2 7-5 at the Perth Arena, before he teamed up with Watson to beat Paire and Alize Cornet in the mixed doubles.