MILWAUKEE — The plastic sheets are already in the visitors’ clubhouse at American Family Field. The setup is a clear sign that preparations are underway for postgame celebrations, often associated with playoff clinches or milestone wins. The protective coverings help shield lockers and equipment from champagne showers and other celebratory messes, suggesting that the visiting team is on the verge of a significant achievement. They’re hanging from the ceiling, rolled up and waiting to be released for a champagne celebration that, for now, belongs to no one. For the Rays to be the ones to use th...