Serbia’s Novak Djokovic, the second seed, cruised into the semi-finals of the Rome Masters Saturday after a rain-interrupted 6-1, 6-4 win over Juan del Potro.

Djokovic, the second seed and the only former Masters winner remaining in the draw, will now face Dominic Thiem later Saturday after the Austrian starlet sent seven-time champion Rafael Nadal of Spain crashing out in the quarters.

Djokovic had taken a one-set lead over unseeded Argentinian Del Potro, who held a 2-1 lead in the second set before heavy rain halted play.

Meanwhile, Alexander Zverev battled into his maiden Masters final with a gutsy 6-4, 6-7 (5/7), 6-1 win over big-serving American John Isner.