Hawk-Eye on Roddick's serve and return patterns
Andy Roddick was forced to come through a five-set tussle against Sebastien Grosjean before reaching the Wimbledon semi-finals.
Here Hawk-Eye helps show how the number two seed's serve and return patterns affected his fortunes in the match as a whole.
In the second round against Daniele Bracciali the majority of Roddick's serves were down the centre "T" of the court.
Strangely, he changed his usual tactics in the first set against Grosjean. By putting 75% out to the forehand and 83% to the backhand, he didn't play to his strengths and lost the set.
In the second set, Roddick focused more down the centre and won the set 6-2. In the match overall Roddick got 67% of his first serves in, whereas it Grosjean managed only 44%.
The American was well inside the baseline when he made contact with his returns on Grosjean's second serve in set one. He didn't break serve in the set and lost it 6-3.
For the rest of the match, Roddick gave himself a bit more time, allowed the ball to drop a bit, and was able to have a better swing at it. He was then able to break several times.