The origin of the use of X is disputed.
1.It derives from the French expression for "the egg"(l'œuf)
2. It is also said to derive from l'heure (the hour) in French.
3. A third possibility comes from the Dutch expression iets voor lof doen, which means to do something for praise, implying no monetary stakes
What?
Answer (highlight to read) : Use of "Love" in Tennis in Scoring
