LOS ANGELES -
Sylvester Stallone and his beefy buddies have muscled their way to the top of the weekend box office.
Stallone's action hero roundup "The Expendables 2" debuted at No. 1 with $28.8 million, according to studio estimates Sunday. That's down from the $34.8 million start for "The Expendables" two years ago.
The Lionsgate sequel elbowed out another action tale as Universal's "The Bourne Legacy" fell to No. 2 in its second weekend with $17 million. That was a steep 55 percent drop from its $38.1 million opening weekend, though the movie's domestic total climbed to a solid $69.6 million.
Three other wide releases opened to modest business.
Focus Features' animated comedy "ParaNorman, about a boy leading the fight against zombies that rise from the grave, was No. 3 with $14 million.
"The Campaign," at $13.4 million, came in at number 4.
Sony's music remake "Sparkle," featuring "American Idol" winner Jordin Sparks and Whitney Houston, was No. 5 with $12 million. The update of the 1976 movie centers on three sisters who form a singing group in the late 1960s.
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