Nadal through to semis, Djokovic out
Nine-time champion Rafael Nadal reached the Monte Carlo Masters semifinals on Friday by seeing off Argentina's Diego Schwartzman 6-4, 6-4.
Nadal will next face David Goffin who stunned world No 2 Novak Djokovic 6-2, 3-6, 7-5.
Novak Djokovic fell 6-2, 3-6, 7-5 on Friday to David Goffin at the Monte Carlo Masters to join a growing list of high-profile upset victims.
The Serb joined No 1 Andy Murray and third seed Stanislas Wawrinka in suffering an early exit at the first main clay court lead-up event to the French Open where Djokovic is the defending champion.
Goffin will play either nine-time champion Rafael Nadal or Argentina's Diego Schwartzman for a place in Sunday's final.
Belgian 10th seed Goffin needed five match points to defeat Djokovic having lost all of his previous five meetings against the 12-time Grand Slam champion.
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Albert Ramos-Vinolas scored his second straight upset as the 15th seed beat tournament No 5 Marin Cilic 6-2, 6-7 (5/7), 6-2.
After dumping out world No 1 Andy Murray in the third round the day before, the diminutive Spaniard returned to knock-out mode as he tamed Cilic to surge into the first Masters 1000 semi-final of his career.
He will Saturday face Frenchman Lucas Pouille who came from behind in the final set to overhaul Pablo Cuevas 6-0, 3-6, 7-5 in two hours; the Uruguayan lost serve seven times.
"I know Pouille, he's a young player coming very strong. It will be super difficult," Ramos-Vinolas said.
The Spanish surprise winner remains perplexed at the source of his top form.
"To be honest, I think I'm playing good. I'm competing very good. But I cannot tell you exactly what's happening," the 29-year-old said.
"I played good tournaments in South America in February on clay. Here I'm playing really good, competing all the points. I cannot really tell you what is happening."
Cilic led their series 3-1 going in, but the Croatian fell victim to a few dozen forehand errors as his big game never truly gained traction in the battle over two and a half hours on the Monte Carlo clay.
Later, Rafael Nadal continues his bid for a record 10th title at the tournament, playing Argentine Diego Schwartzman.