Decision of jury shall be final unless?

Question

these two circumstances

Answer 1

1. The trial judge allowed the prosecution to present evidence that was obtained in violation of the defendants constitutional rights

2. The judge admitted evidence that should not have been admitted

Answer 2

One is called JNOV, which is the latin initials for Judgment Notwithstanding the Verdict, so if a jury trial verdict so offends the judge's sense of what they should have done as to be totally unfair in a civil case, he can render a judgment anyway.  That can go against either Plaintiff or Defendant.  

I forget the term for the other, it's when a jury gives a damages award that the judge thinks is way too high, and the judge reduces the amount of the award.  The Plaintiff can appeal, but there's a risk that they will spend a lot of legal fees just to have the Appellate court agree with the trial judge, which is likely.