Depends on the game, I suppose. I was here for a rugby game, and my understanding is that the show goes on with that sport. Bring an umbrella, there isn't great protection from rain in the stands.
If it rains then the game will be canceled.
Bring a rain poncho.
Depends on the sport. If there is lightning the game will be delayed or postponed. Otherwise an umbrella or poncho are recommended.
Thanks! Your answer is awaiting moderation.