<p>A KENYAN court today sentenced two rugby players to 15 years in prison for the gang-rape of a female singer at a birthday party last year.</p> <p>The international rugby sevens players, Frank Wanyama, 24, and Alex Olaba, 23, were earlier this month found guilty of the crime, in a case that has highlighted what some activists referred to as a tradition of “rape culture” in rugby.</p>