NEW YORK -- The New York Mets will open their new Citi Field on April 13, while the New York Yankees will open the new Yankee Stadium on April 16, according to the Major League Baseball schedule released Wednesday.

The Mets will host San Diego in a night game. The Yankees will face Cleveland. Game time has not been set for that game.

National League openers scheduled for April 6 include Colorado at Arizona, New York at Cincinnati, Washington at Florida, Chicago at Houston, Atlanta at Philadelphia, Pittsburgh at St. Louis and Los Angeles at San Diego. On April 7, Milwaukee opens at San Francisco.

Every American League team is scheduled to open on April 6. The schedule includes New York at Baltimore, Tampa Bay at Boston, Kansas City at Chicago, Oakland at Los Angeles, Seattle at Minnesota (in the Twins' final home opener at the Metrodome), Cleveland at Texas and Detroit at Toronto.

One of the opening games will be moved to April 5 so that it can be the ESPN Sunday night game.

The season is opening later than normal in part because of the World Baseball Classic, which will be played during spring training in March.

Kansas City, which is revamping Kauffman Stadium, will unveil its new look on April 10 against New York.

The regular season is to end Oct. 4. If the current postseason format remains intact, Game 7 of the World Series would be on Nov. 5 -- the latest ending ever. Even if there is a four-game sweep in the World Series, the season will last at least until Nov. 1. The only time the baseball season ended in November was 2001, when the season was delayed a week due to the terrorist attacks of Sept. 11.

The All-Star Game is set for July 14 in St. Louis.