[Orioles1966]

You probably had an odd number of teams in the league which would create teams playing different amounts of games.

Easily corrected(so the schedule isn't broken).

Go to schedule editor.

Look for schedule evaluator.

That will tell you the amount of games each team plays against each other.

Then add the necessary amount of games(with schedule editor) so each team plays 162 games.

Doesn't take much time.