Result: Rafael Nadal made to work by Chung Hyeon in Barcelona Open quarter-finals

The mighty Rafael Nadal in action at the Barcelona Open on April 20, 2016
Rafael Nadal progresses through to the Barcelona Open semi-finals with a hard-fought win over Chung Hyeon.

Rafael Nadal has earned his place in the Barcelona Open semi-finals with victory over Chung Hyeon.

The nine-time Ronald Garros champion is favourite to win the clay-court event in Spain, but he was made to work for a 7-6 6-2 win against Chung.

It was Chung - a qualifier from South Korea who is ranked at 94th in the world rankings - who struck first as he moved into a 3-1 advantage, but Nadal was able to recover to take the opener in a tie-break.

However, it was one-way traffic in the second as Nadal conceded just four points in four service games, and two breaks of serve were enough for the left-hander to seal his progress in one hour and 44 minutes.

Earlier on Friday, Andy Murray also moved into the last four with a three-set triumph over Albert Ramos-Vinolas.

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ATP RankingsPoints
1Scotland flag Andy Murray11,270
2Serbia Novak Djokovic7,085
3Switzerland Stanislas Wawrinka5,685
4Switzerland Roger Federer5,125
5Spain Rafael Nadal4,375
6Canada Milos Raonic4,135
7Croatia Marin Cilic3,725
8Japan Kei Nishikori3,650
9Austria Dominic Thiem3,615
10Belgium David Goffin3,055
11France Jo-Wilfried Tsonga2,825
12Bulgaria Grigor Dimitrov2,820
13Lucas Pouille2,696
14Czech Republic Tomas Berdych2,690
15United States Jack Sock2,405
16France Gael Monfils2,365
17Albert Ramos-Vinolas2,180
18Pablo Carreno Busta2,170
19Alexander Zverev2,165
20Australia Nick Kyrgios2,155