Murray required a medical time out at the conclusion of the third set to treat a nasty looking blister, but the Briton refused to blame the injury for his defeat.
He told reporters: "It's just a pretty large blister. You get them -- it happens.
"It was just a bit sore when I was running around. It's not like pulling a calf muscle or something.
"It just hurts when you run, but it's not something which stops you from playing.
"Ninety per cent of the players on tour will have played this tournament with some sort of blister or problem.
"It had no bearing on the result."