I am in the same situation with sitters, but taking him would depend on him. Is he walking yet? Would he be willing to sit still? If he isn't totally trying to walk everywhere, I would put him in an Ergo, get some kid headphones for the noise, have snacks, have a blanket to put over him if he gets sleepy, and give it a try.
I would discuss with your husband the possibility that it may just be too much (if you decide to give it a try). And that way you are prepared for that situation. Are you or he going to take the baby home, and the other get a ride, or grab a taxi, are you all going to go? Are there going to be hard feelings if you do have to leave? If you can't come up with an acceptable backup plan, then you may have to skip it.
I would think that good seats at a bball game may have enough action to keep your son interested. My son (at about 6 months) loved a Shakespeare play, and a concert, but seemed overwhelmed and bored with a football game because we were too high and there was no focal point from up there.
I wouldn't worry too much about his schedule. Just go right back to it the next day. Good luck, and have fun.