Summary: Due to the Baltimore protests/riots, the Orioles and the Chicago White Sox play a baseball game completely closed to the public for safety reasons.
On any given day during the baseball season, give the guys over at Elias Sports Bureau enough time, and they’ll relay some tidbit of information that is a FIRST EVER OCCURRENCE in Major League Baseball. Usually it will be the most obscure and discreet factoid on the planet like “First time left-hand batter collects extra-base hit off of African-American ambidextrous pitcher on a Tuesday with a humidity index of under 38% – IN HISTORY” but the point remains that every day is a first for something in the great American game.
In other words, a whole bunch of things nobody cares about, and lesser chance that anyone would actually remember.