I went to the game last night with my son and after the 2nd period we went to the area where the kosher stand (outside sections 112-113) used to be.
Stand was not open but there were a fair number of frum people wandering around. It took us about 5-7 minutes to get a minyan and BH we got more than ten and finished in time for the start of the 3rd period.
...and when we finished one of the guys said kaddish. I'm not sure if he was there when we started maariv, but knowing that we helped a chiyuv get maariv made it very special for me.