John Isner ends Juan Martin del Potro’s ATP Finals bid with win in Paris Masters

John Isner defeated Juan Martin del Potro in three sets to reach the Paris Masters semi-finals and end the Argentine’s chances of qualifying for the ATP Finals.

The American world No 14, who reached the final in Paris last year, surprised the in-form Del Potro 6-4 6-7(5) 6-4 to maintain his own hopes of reaching the season-finale in London, live on Sky Sports.

Isner, who will qualify for London ahead of Pablo Carreno Busta by claiming the Paris title, backed up Thursday’s three-set victory over Grigor Dimitrov and impressed on both wings from the back of the court against a subdued Del Potro.

The first set was dominated by serve with both players holding in assured fashion before Isner secured a decisive break in the 10th game of the match to secure the opening set despite earlier receiving treatment to his ankle.

Both players continued to dominate behind their serve, neither player won more than two points against the server, with the second set going to a tiebreak, which Del Potro claimed after Isner double faulted on set point.

John Isner fights through injury to defeat Juan Martin Del Potro in three sets to set up a semi-final match against qualifier Filip Krajinovic

Isner took control of the third set with a pivotal early break before staying cool under pressure to close out the encounter and leave Del Potro waving goodbye to his 2017 campaign, while the 32-year-old American will meet qualifier Filip Krajinovic in Saturday’s semi-finals.

Krajinovic benefited from Rafael Nadal‘s withdrawal, on Friday, from the tournament through a recurrence of his knee injury which impacted the Spaniard during his hard-fought three-set victory over Pablo Cuevas on Thursday.

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However, Isner is expecting a tough challenge against the Serb: “My opponent came through qualifying so has won five matches already and is playing really well. I just need to play my game and see what happens.”

The season-ending extravaganza ATP Finals at London’s O2 this November ends another memorable year.

All the action will be covered via our website www.skysports.com/tennis with live blogs, reports and expert analysis as the season reaches its climax.

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