None of the St. Louis Cardinals top 5 prospects from the 2017 season are with the organization anymore. Now that is not to say they did not receive production from the group as one player played for the Cardinals for 6 seasons and won a Gold Glove whilst another was an All-Star pitcher. It was a class that featured a lot of hope including the potential shortstop and catcher of the future, but they were never able to fully pan out.
As discussed in the 2016 version, if there is a prospect who was previously covered in a prior article, I will post a link to when they were first discussed to prevent things from getting repetitive.