In this case, the rational belief is that United won, but the true belief is that City won.
Given the information that City indeed won, it is rational to believe that City won, and one who has that information could also say that (for all they know) it’s true that City won. Given information that United won, it is rational to believe that United won, and one who has that information could also say that (for all they know) it’s true that United won. All this with some levels of certainty, which would be less for reading bare stats one time in one newspaper, and much higher when evidence is received from multiple error-resistant sources.
Given the information that City indeed won, it is rational to believe that City won, and one who has that information could also say that (for all they know) it’s true that City won. Given information that United won, it is rational to believe that United won, and one who has that information could also say that (for all they know) it’s true that United won. All this with some levels of certainty, which would be less for reading bare stats one time in one newspaper, and much higher when evidence is received from multiple error-resistant sources.