Yuki Bhambri fought off stiff resistance from China's Ze Zhang and booked a quarter-final berth in the singles event of the ATP Challenger tournament, in Shanghai today. The fourth seed Indian eked out a 7-5, 6-3 win over the local boy. The 23-year-old Delhi lad is the lone Indian surviving in the tournament as Saketh Myneni lost his singles as well asdoubles match today.In the singles second round, he lost 6-3, 3-6, 2-6 to Australia's Jordan Thompson and later combing with compatriot N Sriram Balaji, he lost the quarterfinals 1-6 1-6 to Peter Gojowczyk and Jurgen Zopp.