"Guardians of the Galaxy" became the summer's top-grossing movie at the North American box office with a $17.6 million weekend that narrowly bested the young adult melodrama "If I Stay."
With an estimated $17.6 million in its fourth weekend of release, the Marvel space adventure passed "Transformers: Age of Extinction" to become the summer's biggest domestic hit with a cumulative total of $252 million.
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The Warner Bros. tearjerker "If I Stay" failed to top the box office with a weekend haul of $16.4 million, according to studio estimates Sunday. The Chloe Grace Moretz film came in third place behind the reptile reboot "Teenage Mutant Ninja Turtles," which made $16.8 million.
The Weinstein Co.'s long-delayed "Sin City" sequel, "A Dame to Kill For," flopped. It opened with just $6.5 million.