CHICAGO -- Joshua Báez always believed this day would come. And he has absolutely made the most of it. The Cardinals' young slugger is now the first player in history to homer three times in his MLB debut. On the first Major League pitch Báez saw, Cubs left-hander Matthew Boyd challenged him with a 93.4 mph fastball up in the zone. Báez jumped on it, launching a two-run homer a Statcast-projected 449 feet to dead center field. The ball left his bat at 108.6 mph and gave the Cardinals a 3-0 lead. Then, to make the day even more memorable,...