Somebody taught Tendulkar how to hold a bat. Somebody taught Vishwanathan Anand to differentiate between a pawn and a bishop. These are people who are content to remain in the background. Modern day Arjunas need Dronacharyas to fine-tune their skills. Every one has the potential to be a sports star but there are a select few that can churn them out on a regular basis. These are the ones that we call coach.