HOLLYWOOD, Calif. — Sylvester Stallone and his pumped-up pals in The Expendables remained No. 1 for a second straight weekend with ticket sales of $16.5 million, according to studio estimates released Sunday.

The action film claimed the top spot over the Twilight spoof Vampires Suck, which premiered in second with $12.2 million. The total was just enough to outpace Julia Roberts' Eat Pray Love, which finished third at $12 million.

Coming in fourth was the Bow Wow comedy Lottery Ticket, which premiered with $11.1 million. The Will Ferrell and Mark Wahlberg buddy-cop comedy The Other Guys slipped to fifth place at $10.1 million.

Jennifer Aniston's The Switch was a notable bomb over the weekend, opening in eighth place with $8.1 million.

Weekend Box Office (Aug. 20-22):

1. The Expendables, $16.5 million.

2. Vampires Suck, $12.2 million.

3. Eat Pray Love, $12 million.

4. Lottery Ticket, $11.1 million.

5. The Other Guys, $10.1 million.

6. Piranha 3D, $10 million.

7. Nanny McPhee Returns, $8.3 million.

8. The Switch, $8.1 million.

9. Inception, $7.7 million.

10. Scott Pilgrim vs. the World, $5 million.