DUBAI (AFP) - Venus Williams called for reform of drug-testing practices after reaching the second round of the Dubai Open on Tuesday with an overwhelming performance. The Wimbledon champion was asked if the regulations - which require players to make it known where they will be available for one hour of every day - were too much of a demand on players. She thought they were. "If your match goes to one o'clock at night you don't know what's going to happen if you are focussing on recovery for the next day," Williams said. "You are not focussing on where you are going to be. You are trying to do what you have to do - even at home. First thing you do is wake up and go to play. "There are some things in the system which need to be looked at. We want a system which works and then it's fair." The Women's Tennis Association system is the same as that used by the Association of Tennis Professionals, the men's tour's governing body, as both follows the dictat of the World Anti-doping Authority. It was this which was criticised recently by Andy Murray. The world number four from Britain made similar comments to Williams, complaining that he had been visited at seven in the morning on his return from the Australian Open. Earlier Williams overwhelmed Anastasia Pavlyuchenkova, the world number 44 from Russia in only 57 minutes and for the loss of only 25 points out of 79 and one game. It was a devastating display of heavy hitting on her return to the Gulf region which saw her win the WTA Championships year-end tournament in Doha in November. The Wimbledon champion served seven aces, had no break points against her, and belted her forehand with intimidating freedom on a fast and responsive court. Williams next plays Alize Cornet, the steadily improving 19-year-old from Nice who recently broke into the world's top 20, and could have a semi-final with her younger sister Serena Williams, the top seed, in Friday's semi-finals. Earlier Jelena Jankovic, the 2008 year-end world number one, also reached the last 16, outplaying her opponent, Monica Niculescu, the world number 48 from Rumania, by more gradual stages, though in the end her 6-3, 6-2 success was almost as effective.