“For that alone, charges should be brought.”

He covers all his bases.

Mayor Eric Adams donned a baseball cap bearing the New York Mets and Yankees logos at the Columbus Day Parade on Monday – a fashionable beanball for all of Gotham.

“He should be prosecuted for that alone,” tweeted one self-described “terrible Yankee fan.”

Hizzoner probably wore the hat in anticipation of a possible Subway Series between the Mets and Yankees.

In fact, the hat appears to be a throwback to the 2000 World Series between the rival teams, in which the Yankees defeated the Mets 4-1.

But Adams' choice stunned baseball fans more than former Mayor Bill de Blasio's allegiance to the Boston Red Sox.

“Jail,” tweeted another MLB fan.

Councilman Justin Brannan (D-Brooklyn) chimed in with a lofty swipe at the embattled mayor.

“I am all for Carl Jung and human duality, but this is outrageous,” he wrote on X, referring to the Swiss founder of analytical psychology.

“A local law amending the New York City Charter and the Administrative Code of the City of New York, in relation to making this hat illegal.”

Adams' controversial hat choice comes as the Mets face the Los Angeles Dodgers in the National League Championship Series. The Mets lost Game 1 on Sunday 9-0, the franchise's worst result.

The Yankees face the Cleveland Guardians on Monday in Game 1 of the American League Championship Series.

In addition to stoking the anger of baseball fans, Adams is facing historic bribery and corruption charges in federal court in Manhattan.

His ill-advised baseball attire was reminiscent of former Mayor Michael Bloomberg's outfit at the Columbus Day Parade in 2003, where the diminutive cop wore Yankees gear except for his red socks.

The suspiciously Red Sox-esque socks caused a stir in the years before social media, but Bloomberg insisted they should honor the Italian heritage, The New York Times reported at the time.

—Additional reporting by Craig McCarthy