Top seed Dominic Thiem was dumped out of the ATP 250 Lyon Open in dramatic fashion on Thursday. The US Open champion was comprehensively beaten in just 66 minutes by Britain's Cameron Norrie, a player ranked 45 places below the Austrian world number four. Norrie broke serve in the fourth game of the first set on his way to taking the opener 6-3. Thiem appeared to have found his feet in holding to 15 at the start of the second, but then won only three of the next 23 points as Norrie reeled off five games in a row. There was no way back after that and Norrie duly served out on his third match point to complete a 6-3, 6-2 victory. He'll next face either Italian number six seed Jannik Sinner or lucky loser Arthur Rinderknech of France for a place in the quarter-finals.