Hey Yogesh.

Here are some Postgraduate Course you can persue in sports category:

Master of Physical education

M.Sc in Sports Coaching

Post Graduate Diploma in Sports Medicine

Post Graduate Diploma in Sports Management

Post Graduate Diploma in Sports Business

MBA in Sports Management

Master of Sports Management (MSM)

M.Sc in Sports Science

All courses have different procedures for application which you can get if you google the courses. 

Hope this helps. All the best.