I keep my camelback filled with straight water, but I bring a couple of the sports drinks to take between games. Trail mix and beef jerky are usually in a pocket. Then I'll keep a couple of fruitbars and granola bars in my car!
I've also found that I pop a 5 hour energy before the first game and I'm good to go for hours. I don't like the energy drinks too much sugar and I crash after an hour or so.
Nothing says loving, like a head shot!