Southern CaliforniaAs Baseball Season Begins, Southern California Stadiums Are Rife With RulesSaveMark Us Preferred on GooglePrintOpening day ceremonies are performed at Petco Park before a baseball game between the Los Angeles Dodgers and the San Diego Padres in San Diego, Calif., on April, 4, 2016. Lenny Ignelzi/Associated PressJack Bradley3/31/2021|Updated: 4/1/2021It’s opening day for Major League Baseball (MLB) April 1, but the rules of the game don’t just apply to players this year.Fans, too, must abide by a plethora of regulations in order to catch their favorite team in person during the ongoing pandemic.We had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.