Game time temperature is supposed to be mid 50's, so I'd wear a decent sized sweater and leave the jacket as I have a tendency to forget them when I go into watering holes and such. What I've found that works well for protection against rain in these types of applications is one of those $1.00 emergency ponchos that fit in your hip pocket. They work great for this application as you're not moving around much anyway.
You're not going to get cold surrounded by so many warm bodies and depending on what the wind does, even a sweater may make things a little too warm during the game.