Another rainy day forced the Broncos and their newest players inside for the opening of rookie mini camp. #Broncos Rookie Mini Camp day 1. Forced inside because of rain pic.twitter.com/8hyzERj0Ar — BSNDenver.com (@BSNDenver) May 8, 2015 27 first and second year players along with 10 tryout hopefuls vying for a roster spot, gathered together for the first time at the…...