Second seed Tsitsipas only suffered one blip in an otherwise routine win, when the 55th-ranked Kazakh broke back to 4-5 in the first set.

Tsitsipas dropped only one point on serve as he cruised through the second set after gaining the break he needed in the fourth game.

The 21-year-old will face either 2015 winner Frenchman Gilles Simon or Canadian teen Felix Auger-Aliassime in the final as he attempts to become the first player to defend the Marseille title since Swede Thomas Enqvist in 1998.