Many Ulama are saying that sport is permissible provided there are no haraam activities taking place.

Answer

The many Ulama are speaking nafsaaniyat and shaitaaniyat. They fabricate lies in the name of Rasulullah (sallallahu alayhi wasallam), and deliberately ignore what Nabi-e-Kareem (sallallahu alayhi wasallam) himself said about sport. If you don't know, then he said the following: "Every sport of the Mu'min is baatil….." If you have not seen our book on Sport, you may write for a copy.