Dear Biswadeep, many undergraduates pursue MBA though there is no common ground in the subjects. I hold a Master's degree in Psychology but I work as a Sr. Business Analyst for one of the Big 4s. There is nothing common between what I studied and what I work for. So it might be the same with you. But given the importance that Sports has been earning in India, a specialisation in that field will take you a long way. Believe in your strengths and the decision you take. It might seem odd in the beginning because commerce is different from sports. But it is a risk worth taking and eventually you will know you took the right step. Every first step is difficult. But eventually when you get to study it for 2 years, it will become easier. Good luck.