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.

As opposed to MLB, the NBA, and NHL, who use a year to signify their championship game history, the NFL goes with a number. Here's why.

The use of Roman numerals did not become an NFL tradition until Super Bowl V in 1971. The first two Super Bowls were known as ...