Dominic Thiem claimed his first win since February with victory at the Estoril Open.

The former US Open champion and two-time Roland Garros finalist had gone his previous four ATP Tour-level events without a win.

But Thiem, once ranked as high as third in the world, ended the drought with a 3-6 6-3 6-4 defeat of compatriot Sebastian Ofner.

He will next face American Ben Shelton, who defeated Constant Lestienne 7-5 7-5.

Meanwhile, there were three shocks at the Grand Prix Hassan II in Marrakesh.

Roberto Carballes Baena came from a set down to beat fifth seed Maxime Cressy, Alexandre Muller overcame sixth seed Richard Gasquet, and qualifier Andrea Vavassori defeated eighth seed Nicolas Jarry.