Good afternoon and welcome to our LIVE coverage of the fourth quarter-final at ATP Dubai between Juan Martin Del Potro and Jo-Wilfried Tsonga!

DEL POTRO 7-6 6-2 - MATCH - Alas, he cannot. Del Potro dishes up a service love game to wrap up a comprehensive second set and book his place in the semi-finals where he'll meet Roger Federer.

DEL POTRO 7-6 5-2 - The crowd gets behind Tsonga as he goes 30 ahead, from which point he cracks on and pulls another game back. But Del Potro of course will now serve for the match. Can Tsonga pull off a remarkable comeback?

DEL POTRO 7-6 5-1 - game-15 for Del Potro means he will now get at least two serves for the match, assuming he doesn't break Tsonga's first.

DEL POTRO 7-6 4-1 - Tsonga survives a scare as Del Potro comes from love to 30-30, to clinch his first game in six.

DEL POTRO 7-6 4-0 - The dominance continues with a game-30 for Del Potro, leaving Tsonga with a mountain to climb.

DEL POTRO 7-6 3-0 - BREAK - The contest has suddenly become one-sided from the tie-break, as the Argentine sweeps his way to a third game in a row.

DEL POTRO 7-6 2-0 - A tense exchange ends with Del Potro gaining the first two-game lead of the match from deuce.

NOTE: Apologies, Del Potro actually broke Tsonga's serve in game one. He now has the ball for the second game.

DEL POTRO 7-6 1-0 - The Argentine retains his momentum from the emphatic tie-break performance by holding his serve to take the first game of the second set.

DEL POTRO 7-6 - SET - The tie-break goes nothing like the set which preceded it, as Del Potro powers into a 5-0 and then 6-1 lead before an ace seals the first set.

DEL POTRO 6-6 - Tsonga sends us into a tie-break after fighting back from the verge of a costly break of service 30-love down.

DEL POTRO 6-5 - Another back-and-forth game reaches deuce, where Del Potro this time moves quickly to take the lead once more.

DEL POTRO 5-5 - From deuce, Tsonga makes good on the first advantage to keep things even stevens here in Dubai.

DEL POTRO 5-4 - The Argentine makes it nine straight serve games. Still awaiting the first break. And it could be a crucial one.

DEL POTRO 4-4 - Tsonga holds off more of a fightback - with Del Potro this time wiping out two of his three game points - to level things for a fourth time.

DEL POTRO 4-3 - In a mirror of the third game, Del Potro slipped up once at 40-0 before taking the seventh game-15.

DEL POTRO 3-3 - Starting off with an ace, Tsonga again conceded a solitary point en route to an assured game in service.

DEL POTRO 3-2 - Tsonga claws back from 30-love to level up, only for Del Potro to rally and hold his serve in the fifth.

DEL POTRO 2-2 - Once again the contest remained very much with the serve, as Tsonga shook off a stumble at 30-0 up to secure a comfortable game-15.

DEL POTRO 2-1 - The Argentine raced his way to three game points, and after Tsonga pulled one back, clinched the third game.