Andy Murray is through to the quarter-finals of the BNP Paribas Open in Indian Wells after the British No 1 silenced Carlos Berlocq.
It was far from routine for Murray as he was rattled by both his opponent's play and his grunting, but the Scot dug deep to record a 7-6 (7-4) 6-4 win.
Murray was broken twice in the first set - and showed his displeasure more than once - before setting up a last-eight clash with Juan Martin Del Potro.
"It was tough," Murray told atptour.com. "He started well and he was playing very aggressive.