DENVER (AP) – The Denver Nuggets have bolstered their injury-depleted point guard ranks by signing veteran Austin Rivers to a 10-day contract. The Nuggets lost star Jamal Murray to a torn ACL in his left knee last week and Monte Morris injured his left hamstring Friday night. Coach Michael Malone says Morris will miss multiple games. Rivers brings a 9.1-point career scoring average and plenty of playoff experience to the Nuggets. He is expected to be available when Denver visits Portland on Wednesday night.