Andy Murray made it through to the quarter-finals of the ABN Amro World Tennis Tournament in Rotterdam but will not want to reflect for too long on a hard night's work.
The Wimbledon champion looked way off the pace against unknown Austrian Dominic Thiem, labouring badly and looking nothing like a two-time grand slam winner.
Twenty-year-old Thiem was clearly on the receiving end of fortune as his carefree, hit-everything approach lasted throughout the whole match - a rare occurrence.
But Murray could not find a way to break the world number 113, and showed plenty of frustration before he ground out a 6-4 3-6 6-3 win.
It had looked as though it would be easy for Murray, with the Scot breaking in the first and third games to take early control.
The signs of trouble became evident quickly, though, and after seeing off a break point he coughed up his serve with a wayward forehand.
He would take the set 6-4 but the second must rank as one of the worst Murray has played for some time.
He was never able to dominate his opponent and on his only chance to break in the fifth game, broke a string on the vital point.
He was broken in the eighth game with another poor forehand costing him, and Thiem made him pay with a routine hold.
Murray continued to labour in the third set and endured a frustrating second game as he repeatedly failed to put Thiem away.
He smashed his racket into his shoe at one stage, before eventually getting the break he craved and going on to see it out.
Murray next faces Marin Cilic.