Something happened last night in Chicago that's never happened before in the history of MLB.
https://www.yahoo.com/sports/blogs/mlb-big-league-stew/four-first-place-teams-combine-for-historic-cinco-de-mayo-in-chicago-001007716.html
https://www.yahoo.com/sports/blogs/mlb-big-league-stew/four-first-place-teams-combine-for-historic-cinco-de-mayo-in-chicago-001007716.html