Nolan Arenado is an eight-time All-Star, a 10-time Gold Glove winner and many in the baseball world believe the star third baseman is well on his way to having a plaque in Cooperstown at the Baseball Hall of Fame. One thing he hasn’t accomplished is postseason success with just five postseason hits in 33 at-bats over 13 seasons. “I still want to play in the playoffs,” Arenado said. “I know my numbers aren’t great, but that doesn’t take away from the fact that I was prepared for it and that I’ve always been prepared for it. I just haven’t played the way I expected.” “I want the opportunity to do it again and I don’t see why this group can’t do that,” he added. “That’s why I was really open to playing here. My expectations are still high.” It’s no surprise Arenado was traded on Tuesday from the rebuilding St. Louis Cardinals, considering they had shopped him extensively for more than a year. Still, the end came quickly. Now he joins a franchise trying to …