Sumit Nagal fights back to beat Jason Jung, enters Chennai Open ATP Challenger quarters

Nagal battled hard after being a set down to keep the Indian challenge alive in the singles category. Nagal, ranked 506 in the ATP rankings, will take on Great Britain's Jay Clarke (313) in the quarterfinals.Clarke defeated eighth-seed Dimitar Kuzmanov 3-6 6-3 6-4 to advance to the next round.Nagal, who came through the qualifying rounds, could not break the service of his Taipei opponent in the opening set.

The 33-year old Jung won a lot of points on his serve and never faced a break point while capturing the first set 6-3.The 25-year old Indian raised his level of play after losing the first set as he broke his opponent's serve thrice in the second set while losing his own once to level the terms.It was Nagal all the way in the third set as he landed 75 per cent of his first serves and returned superbly to win the decider without dropping a game.Meanwhile, no.2 seed James Duckworth beat Serbia's Hamad Medjedovic 6-2 7-6 (3) to book his spot in the last eight.He was joined in the quarterfinals by compatriot Max Purcell, a 7-5 6-3 winner over Petr Nouza of Czech Republic.In the doubles, the top-seeded Indian duo of Jeevan Neduncheziyan and N Sriram Balaji beat compatriots Nagal and Sasikumar Mukund 7-6(5) 6-0 to sail into the semifinals.Results: Men's singles (pre-quarterfinals): Sumit Nagal (India) beat Jason Jung (Chinese Taipei) 3-6 6-2 6-0; James Duckworth (Australia) beat Hamad Medjedovic (Serbia) 6-2 7-6(3); Max Purcell beat Petr Nouza 7-5 6-3; Jay Clarke beat Dimitar Kuzmanov 3-6 6-3 6-4.Doubles (Quarterfinals): Jeevan Neduncheziyan and N Sriram Balaji beat Sumit Nagal and Sasikumar Mukund 7-6(5) 6-0; Jay Clarke and Arjun Khade beat Ji Sung Nam and Min Kyu Song 1-6 7-6 10-8; Petr Nouza and Andrew Paulson beat