Rakesh Kr Yadav specializes in what throing event in regular track and field competition that consists of a metal ball attached by a steel wire to a grip?
Hammer throw The hammer throw is one of the four throwing events in regular track and field competitions, along with the discus throw, shot put and javelin. The "hammer" used in this sport is not like any of the tools also called by that name. It consists of a metal ball attached by a steel wire to a grip. The size of the ball varies between men's and women's competitions (see Competition section below for details).
Roller sport Roller sports are sports that use human powered vehicles which use rolling either by gravity or various pushing techniques. Typically ball bearings and polyurethane wheels are used for momentum and traction respectively, and attached to devices or vehicles that the roller puts his weight on. The international governing body is the International Roller Sports Federation (FIRS).