Ed Price, who covers the New York Yankees for New Jersey's The Star Ledger, noticed that there's an odd sign in the dugout of the White Sox's stadium: "NO BOTTLED WATER ON THE BENCH." (Even in the humid Chicago summers!)
Gatorade is Major League Baseball's "official sports drink." So instructions were sent that no player could be seen drinking anything but Gatorade in the dugout. Not even Aquafina, which is the "official water" of MLB. Not even bottles of water with the labels removed.
White Sox clubhouse personnel said if players take bottled water onto the bench, all the bottled water will be removed from the clubhouse as punishment.