The Avengers are mighty, but not enough to beat themselves. The Marvel and Disney sequel earned a staggering $187.7 million in its debut weekend, making it the second biggest U.S. opening of all time according to Rentrak estimates Sunday.
But "Avengers: Age of Ultron" failed to top the all-time record of the first film's $207.4 million debut in 2012.
Although "Ultron" was the only new film in wide release this weekend, it had some significant small screen competition: The Kentucky Derby, the NBA playoffs, and the Floyd Mayweather Jr. and Manny Pacquiao fight.
Numbers could shift by the time Monday actuals roll in, but it seems the robust...