Bengaluru, April 3 -- Karan Singh put up a gritty display to edge past Nikita Ianin in a tense three-setter on a rain-curtailed day at the SM Krishna Memorial Open at the SM Krishna Tennis Stadium here on Thursday. With this hard-fought victory, Karan advanced to the quarterfinals, where he will face top seed Jay Clarke. Karan, the highest-seeded Indian in the tournament, overcame a stern challenge from Ianin in a gripping encounter. The Russian qualifier made a strong start, claiming the first set 6-3. However, Karan mounted a comeback, breaking in the fifth game of the second set to gain a 5-2 advantage before levelling the match. The decider saw both players holding serve until 5-5, when Karan capitalised on a crucial break in the 11th ...