Zack Snyder did some filming on Saturday night in L.A. for 'Batman vs. Superman,' which is what Warner Bros. themselves referred to as the title. The filming took place at a football game, set up at Weingart Stadium, which serves as the set of the Gotham City University home stadium. The Gotham City team, in black and gold, was playing against the Metropolis State University team, in red and white. If we've learned anything from 'The Dark Knight Rises,' no football game is safe as long as Batman is around.

The video above was captured and uploaded by SadPuppyProductions, who added some details:

Day 1 of filming for 2015's "Batman Vs. Superman". The scene takes place at Gotham City University's Stadium facing off against rivals Metropolis University. Everyone in the audience was given various Gotham Football shirts. Some black, some yellow, some T Shirts, some sweatshirts, etc. Zack Snyder (Watchmen, 300, Man of Steel) was on set, however the main characters were not there.

You can see Snyder in the video, along with several extras who are indeed wearing the opposing school colors and being given directions on how to react. According to Batman-News, Warner Bros. repeatedly referred to the title as 'Batman vs. Superman,' although an official title has yet to be released. The site also said that this football scene will be the opening of the film:

It started with Warner Bros. telling the crowd that they were going to be in Batman vs. Superman. Yes, a Warner Bros. representative referred to the movie as Batman vs. Superman. That’s still not the official title, but it’s one that keeps coming up. Warner Bros. also announced that this would be the opening of the movie. Then two scenes were filmed. Both plays were from around Gotham city’s 30 yard line. The first play was a tackle for a Metropolis loss. The second was for a touchdown pass to the corner of the end zone for Metropolis. Then the bench cleared for Gotham and they had to break up a fight on the field. Gotham never even went on offense.

You can check out the entire four-minute video above. 'Man of Steel 2,' or 'Batman vs. Superman,' or whatever it will be called, hits theaters in 2015.