Andy Murray had to play through a deafening downpour on his way to victory over Marcel Granollers and a place in the US Open third round.

Murray's match was put under the $150million roof in Arthur Ashe Stadium but a combination of echoing chatter and torrential rain outside still made conditions a challenge.

The British number one, however, wavered only momentarily as he beat Granollers 6-4 6-1 6-4 to book his place in round three. He will now face either France's Gilles Simon or Italian Paolo Lorenzi.