Postpublished at 12:05 Greenwich Mean Time 26 January 2015
Muller throwing his best punches, but at the other side of the net is a player who is richer than him, more successful than him and, well, better than him. At 0-30 down the world number 42 looks towards his camp, and raises his hands in despair. He does well to level at 30-30, but clumsily sends a backhand volley over the baseline to present Djokovic with a break point.
Muller won't escape from the traps again, surely? The Serb in control, pulling his opponent across the baseline, but comes unstuck with a clumsy forehand into the tramlines. But a second break point comes his way... and disappears as Muller hurls an ace down the T - his fourth of the match. Third break point - the Djokovic defence made of the toughest teak as Muller nets - and the man from Luxembourg eventually crumbles like a soufflé - drilling a backhand wide to allow Djokovic to serve for the set.