Can HDFC bank save banknifty?

Markets are staring at a gap down opening. The Nifty is likely to take a hit. In such scenario Banknifty has to put a lot of effort to keep its head above the water. The HDFC bank results are good but the big question are they good enough to save Banknifty.
Immediate support: 37300
Immediate resistance: 37900

If 37300 is broken it can easily travel 300-400 points on the downside.