Maybe you didn't pay close enough attention during the preseason to notice and those yellowish 50-yard line numerals on Sunday perplexed you to wits' end.
In case you haven't Googled it or asked that one friend who always knows these sorts of things, here's the deal: in celebration of Super Bowl 50 -- the golden anniversary year -- the NFL has had those numerals painted gold at midfield in each NFL stadium.
The league's planned a number of other events, too, such as honoring the 43 Super Bowl MVPs throughout the season. Two Ravens hold that honor: linebacker Ray Lewis for Super Bowl XXXV and quarterback Joe Flacco for Super Bowl XLVII.
The NFL also plans to make a big deal of the 19 games this season that match up opponents from past Super Bowls. For the Ravens, that will come Oct. 18, when they play the San Francisco 49ers, whom they beat, 34-31, in Super Bowl XLVII in New Orleans.
Super Bowl 50 will be played Feb. 7 at Levi's Stadium in Santa Clara, Calif., home of the 49ers.