Anderson has his work cut out against Isner in Wimbledon semifinal

Watch Fuming Del Potro smashes himself with racquet as Wimbledon tie is delayed

It will be the second Grand Slam final for Anderson, who reached the final of the US Open past year to Rafael Nadal.

Nadal leads their series 26-25 heading into Friday's match, including 9-4 at Grand Slam tournaments.

Rafael Nadal is bracing for another titanic battle with Novak Djokovic as tennis's most abiding rivalry returns to Wimbledon's Centre Court for a blockbuster semi-final.

Nadal's total of nine Grand Slam match-wins against Djokovic is the most that anyone has managed against the Serb, but Djokovic has also defeated Nadal at the Grand Slams more often than anybody else, with 4 victories against the Spaniard at the majors. The two will play at Wimbledon on Friday for the third time, with their record an even 1-1.

A rematch of previous year's finals at Roland Garros, it was a gruelling five-setter match.

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One that is reminiscent of Nadal's five-set classic against Roger Federer in the 2008 Wimbledon final.

"He is one of the more complex players that I ever saw on our sport".

The length of the first semifinal means that Djokovic's matchup with Nadal will be played under the lights on Centre Court.

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This will be the 52nd time they meet on the court ever since they turned professionals. He seems to have returned to form, as he has been excellent at Wimbledon.

Baseline confidence Rafael Nadal is super confident after his success on clay, winning his 11th French Open title, and now he is playing a lot better on grass.

The fifth-seeded del Potro failed to convert four match points when serving at 5-4 in the fourth set, but maintained his composure to close out the contest with his first opportunity in the tiebreaker that followed.

He is the second South African to reach the final, after Brian Norton 97 years ago.

Isner, who leads Anderson 8-3 in past meetings, is making his debut in the final four of a Grand Slam tournament in his 41st appearance at one.

The video showed the three-time Wimbledon champion playing marbles with his support team.

Kevin Anderson has won the first set of his Wimbledon semifinal against John Isner 7-6 (6).

"I must be honest, after those first two sets I didn't think he had a chance of beating Federer", the 60-year-old Curren told Netwerk24.

"I'm really not thinking about being an underdog or being a favourite", he said.