Rick Ross -- Pumped For Miami Dolphins ... Thank God We Fired Coach! (VIDEO)

The Boss is pleased ... with Rick Ross telling TMZ Sports he's THRILLED the Miami Dolphins axed head coach Joe Philbin -- because now things are finally looking up for his favorite NFL team.

Ross isn't just a HUUUUGE Dolphins fan -- he also says he's still VERY interested in buying 5% of the team ... something he's been trying to do for the past year.

So, when we saw him out in NYC Tuesday, we had to ask about the change of the guard this week -- and Ross made it clear, he doesn't think it can get any worse!