Sports betting has been popular for many years before 2000 .
Denise was one of the first to realize the potential of online betting and Bet365 became one of the first sportsbooks to focus entirely on sports betting .
Sports betting has been popular for many years before 2000 , but Denise was one of the first to realize the potential of online betting and Bet365 became one of the first sportsbooks to focus entirely on sports betting .