Tennis News: Sumit Nagal achieves singles career-best ATP rankings

India's Sumit Nagal jumps 15 places to achieve a career-best ranking of 159 in the latest ATP rankings and Prajnesh Gunneswaran continues to maintain his place in the top-100 jumping three places to be at the 82nd spot. The 22-year-old Nagal who lost in the final of the Banja Luka Challenger The Haryana boy had earlier made a first-round appearance at the US Open last month to become the only fourth Indian to win a set in the main draw of a Grand Slam in the last 20 years.