Basically, Arenado is done for the season with a week remaining. He's been battling the shoulder issue for a while now and there's no need to push it with the Rockies out of contention. He never got fully right this summer, batting .253/.303/.434 with eight homers in 48 games. There is a real chance he has played his last game with the Rockies, which would of course be a hit to his fantasy value next year. Expect to hear his name in trade rumors this offseason.