Why are the victors in a competition called “champions”?
A boxing champion is, of course, the best in his class, but the word has a more honourable history than its use in sports. Derived from the Latin word campus, which refers to an open field where battles were fought, the word champion passed into French before being adopted into English in the thirteenth century. Its meaning was “one who fights on behalf of another” or “one who defends a person or a cause.”

Why is the outcome of a game known as the “score”?
Scores are tallied to decide the winner of a game. Tally is from talea, the Latin word for stick. Scoring is the act of cutting notches or nicks onto that stick to keep track. A stick was sometimes split down the middle so a creditor and debtor could keep an honest tally by notching transactions at the same time. In sport, the side with the most scores or notches cut into a tally stick was the winner.

How many coloured flags are used in auto racing, and what do they mean?
Seven flags are used as signals to drivers in car races: a green flag starts the race; a yellow flag means “don’t pass”; a red flag means “stop for an emergency”; a black flag signals a rule infraction; a white flag indicates that the leaders are starting the last lap; a blue flag with a diagonal stripe tells slower cars to move aside; and finally the checkered flag means the race is over.