Rohtak, Oct. 14 -- 'Dhoka hai, sab dhoka,' Sahab Singh Narwal emphatically states, sitting on a charpoy, about the one common factor that binds kabaddi, hockey and boxing. He has played hockey and kabaddi and is a self-taught boxing coach-now a rather famous one. His pupil Manju Rani won silver on Sunday on her world championships debut at Ulan-Ude, Russia. Rani fought her heart out but lost a close bout (1-4) to home favourite Ekaterina Paltceva in 48kg....