Roman numerals are a numeral system which was used in Ancient Rome. It uses letters instead of numbers to represent values. You may have seen Roman numerals on clocks and on TV or film credits.

But to make it even more confusing, instead of using a numerical digit, the NFL uses Roman numerals to number the Super Bowl, ...

This year's version of the NFL's biggest game is Super Bowl LIX — or Super Bowl 59, if you're not well versed in Roman numerals. Unlike the other major American sports leagues, the NFL uses ...