Can I bring a dslr camera to a baseball game?

Hi, I'm going to a mets game tonight. Not sure if I could bring my camera, I have a Nikon d3100 dslr camera. I also have a big zoom lense.

Yes, but if you block the view of other spectators, you will be asked to put it away.

I don't know. If it looks professional, you probably can't use it. If you have to ask, you probably can't use it.