This question is tricky to answer definitively without more information. It is important to note that marriage laws vary significantly across the world, and the legal age of consent for marriage also differs.
It is highly unlikely that a professional footballer would be legally married to an 18-year-old in most countries. This is due to the fact that most professional footballers are adults themselves, and the legal age of consent for marriage is often higher than 18.
However, there could be a few scenarios where this question could be relevant:
- The footballer may be married to someone who was 18 at the time of the marriage, but is now older. This is perfectly legal in many countries.
- The question could refer to a relationship, not a marriage. It is possible for a footballer to be in a relationship with someone who is 18 years old.
To provide a more accurate answer, we would need additional information about the specific footballer and the location of the marriage.
