Hurricane Joaquin is wreaking havoc on the final weekend of Major League Baseball's regular season.

With rainy conditions on the East Coast, Saturday is shaping up to full of doubleheaders -- assuming, of course, that the rain lets up by then.

Friday's postponements include: Washington Nationals - New York Mets; New York Yankees - Baltimore Orioles; and Miami Marlins - Philadelphia Phillies. All are scheduled to be made up with doubleheaders Saturday.

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Among the postseason details still to be decided, weather-permitting: the second AL wild card, the AL West title and numerous home-field advantage situation in the ALDS/NLDS.

For now, the AL Wild Card Game is scheduled for Tuesday, with the NL Wild Card Game on Wednesday.

But stay tuned.