Tom Cruise, Zac Efron, Jack Nicholson, Demi Moore and Ashton Kutcher -- no, they weren't the guests at a flashy, red carpet event ... but bleacher fans at last night's Dodgers vs. Yankees game.

The celebs above -- plus stars like Tom Hanks and Philip Seymour Hoffman -- were just a few of the 56,000 people who packed the sellout game.

The Yankees won 8-6 -- check out which stars were rooting for the winning team!

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