It was so refreshing to see Gilles Muller using the old playing style of serving and volleying to great affect this week, against one of the most talented players on the tour.
Dimitrov's serve was broken twice early in the first set and he seemed to have no answer to Muller’s advancing style. The Bulgarian fifth seed lost 6-2 in the opening set.
The left-hander from Luxembourg used the two-card trick to his advantage as he sent his slice serve wide into Dimitrov's backhand and finished the points with tidy volleys into the open court.
Dimitrov can be so frustrating
Dimitrovs coach Roger Rashid must be pulling his hair out at times, particularly when he could play passing shots and instead tries trick shots to pass Muller at the net.
In the second set Dimitrov finally got to terms with Muller’s tactics as he started driving his backhand return down the line, instead of simply chipping the ball back to an expectant Gilles Muller.
Simon outsmarts his younger opponent
The 31-year-old veteran smartly worked his way to the net at every opportunity and forced the second set into a mammoth tie breaker which he won 10-8.
Simon's trade mark slice serve out wide on the advantage side, followed up by a vintage volley into the open court sealed the deal for Muller. In the first round Muller, who is coached by Britain’s Jaimie Delgado, beat David Goffin in three sets but pulled out of playing in the doubles tournament with Andy Murray due to illness.