Result: Novak Djokovic battles past Juan Martin del Potro

Serbia's Novak Djokovic poses with his trophy after winning the final match of the ninth and final ATP World Tour Masters 1000 indoor tennis tournament on November 3, 2013
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Novak Djokovic beats Juan Martin del Potro 6-3 3-6 6-3 to reach the last four of the ATP World Tour Finals.

Novak Djokovic has beaten Juan Martin del Potro to reach the semi-finals of the ATP World Tour Finals at the O2 Arena.

The Serb won the match 6-3 3-6 6-3 against his Argentine opponent to seal his 19h consecutive win since losing in the US Open final.

With the score at 3-2, Djokovic took control of the first set when he broke his opponent at the fifth attempt, before going on to win 6-3.

Djokovic started the second set slowly and Del Potro won a break point in the sixth game to take a 4-2 lead, as he went on to level the scores.

In the third set at 1-1, Del Potro had two break points against Djokovic but the Serb came back to hold his serve.

The miss proved costly and Djokovic eventually broke him at 4-2 and from there he went on to wrap up the set 6-3.

Serbia's Novak Djokovic returns against Switzerland's Roger Federer during their group B singles match in the round robin stage on the second day of the ATP World Tour Finals tennis tournament in London on November 5, 2013
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1Scotland flag Andy Murray7,750
2Spain Rafael Nadal7,555
3Switzerland Roger Federer7,145
4Switzerland Stanislas Wawrinka5,780
5Serbia Novak Djokovic5,325
6Croatia Marin Cilic5,155
7Alexander Zverev4,470
8Austria Dominic Thiem4,030
9Japan Kei Nishikori3,285
10Canada Milos Raonic3,230
11Bulgaria Grigor Dimitrov3,070
12France Jo-Wilfried Tsonga2,770
13Belgium David Goffin2,560
14Spain Roberto Bautista Agut2,425
15Czech Republic Tomas Berdych2,390
16United States Jack Sock2,335
17Pablo Carreno Busta2,305
18Lucas Pouille2,220
19United States John Isner2,110
20United States Sam Querrey2,060