Australian Open

“You cannot be serious,” John McEnroe frequently said in what became his iconic expression during a storied tennis career that included seven Grand Slam singles titles and 10 in doubles. Now, 36 years after his default from the Australian Open in Melbourne — the first in the history of Grand Slam tournaments in the Open era — yes, seriously, Tennis Australia is indeed flashing back to that day in January 1990 to remind longtime fans of that historic occurrence and perhaps a whole new legion of millennials who never knew it happened. AO Originals released this week the first episode of a four-part podcast series called “ SNAP: The John McEnroe Default Saga.”