Mr. Monk and the Big Game - S5-E3
Factual error: All the players have their first names on the back of their jerseys. They should have their last names on the jerseys for better identification considering some of them would probably have the same first name.
Suggested correction: This isn't a mistake just because a school does it a different way than what you expect. Not to mention that some people also have the same last name, so using the last name would create the same "problem." All they would have to do is add a last name initial.
It really is an error because in the opening, when the coach called "Emily," one of the players responded, "Which Emily?" As soon as the second Emily joined the team, the school would have changed the jerseys. Of course, in a school team, siblings may join the team, so first and last names would likely both be incorporated.