(CNN) -- Top seed Novak Djokovic produced his best performance of the week in beating Mischa Zverev in straight sets to reach the semifinals of the Marseille Open.
Djokovic is proving the man to beat in his first tournament since retiring from the Australian Open.
The world number three took just 66 minutes to defeat his German opponent 6-3 6-3 and become the only non-Frenchman to make it through to the last four.
Djokovic will face a tougher test in the semifinals, where Jo-Wilfried Tsonga awaits him after the fourth seed battled past Spain's Feliciano Lopez 6-2 6-7 6-4.
Serb Djokovic is playing his first tournament since heat exhaustion forced him to retire from his Australian Open quarterfinal against Andy Roddick last month.
"I felt really confident on court. I was playing all the right shots at the right time, being very consistent from all sides -- especially on the return, which was the key to the match I think," Djokovic told the official ATP Tour Web site.
"I'm really feeling more comfortable on the court, every day I'm playing better -- which is encouraging for upcoming challenges."
Frenchman Michael Llodra reached his first semifinal in 12 months with a hard-fought 7-6 7-6 win over Russia's Mikhail Youzhny and will next face compatriot Gilles Simon after the second seed beat another Frenchman, Julien Benneteau, 6-2 6-4.