There are a couple of possibilities for "If Necessary" games.

1) If the #1 seed loses game A5, then they will play the loser of game A6 at 2pm on Sunday on Field #1.

2) If the #3 seed loses game A6 and the #1 seed wins game A5, then the #3 seed will play the loser of A5 at 2pm on Sunday on Field #1.

3) If the #2 seed loses game A7, they will play the winner of game C1 at 2pm on Sunday on Field #3.