Box Office: Iron Man 3 Has Second-Highest Opening Ever

Iron Man 3 opened with a whopping $175.3 million at the box office this weekend, making it the second-highest opening of all time (behind 2012's The Avengers) and setting a high standard for the rest of this year's summer movie lineup, Box Office Mojo reports. The superhero flick, which was the only new movie to open this weekend, earned more than five times the rest of the Top 10 films combined.

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Pain and Gain slipped one spot to No. 2, but its gross of $7.6 million was more than a 60 percent drop from its opening week. Holding steady at No. 3 was the Jackie Robinsion biopic 42, which took in $6.2 million. Tom Cruise's Oblivionfell to No. 4 with $5.8 million, while The Croods stayed in fifth place with $4.2 million.

At No. 6 was The Big Wedding, which took in $3.9 million.

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After nearly doubling the number of theaters in which it was shown this week, the Matthew McConaughey/Reese Witherspoon vehicle Mud jumped from No. 11 to No. 7 with a $2.1 million haul. Oz the Great and Powerful also rose, moving back into the Top 10 in eighth place with $1.8 million.

Rounding out the Top 10 were Scary Movie 5 ($1.4 million) and The Place Beyond the Pines($1.3 million).