BTW, the Fresno Grizzlies are the triple-A affiliate of the Washington Nationals ...

[Auggie]

it would great for the Nats to lay some hurt on the team as Sun-Maid and Heineken have (if they haven't already)

[Brother Buzz]

1. They have a contract with the owners through the 2020 season

What sort of hurt could the Nationals throw down on them?

[Auggie]

2. Find another affiliate next year?

Pretty severe, unless it's a common occurance. They could also request the Grizzlies clean house if they want to stay affiliated.

[Brother Buzz]

3. Doesn't that involve the Baseball Commissioner?

Rob Manfred, please pick up the nearest white courtesy telephone.

[Auggie]

4. I'm not sure, but minor league affiliations change all time.

[Brother Buzz]

5. Yes, but the the Baseball Commissioner has to approve/rubber stamp the changes

The Baseball Commissioner has to approve of minor league ownership changes, too.