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.


