 The Athletics says the Nuggets and Jamal Murray have agreed on a four-year max extension worth $209 million. More Nuggets news as Contavious Caldwell-Pope is expected to opt out of his contract and become a free agent. Celtics forward Kristaps Porzingis will miss the start of the season following successful surgery on his left leg. Porzingis may not see game action for five to six months according to the team.