Why not placed on both? More thrill! lol.

Anyways, I've been there. Do you know what I do? I consult every website that shared some insights about some of the upcoming matches. Try to find it by lurking at any sites you will encounter at your favorite search engine. There are lots. You will see predictions, odds, analyzations of both teams, forecast, etc.

After gathering Infos, analyze it well and make an output. Then placed that precious money of yours and "pray" for good luck. Soon as you progress, you don't need to pray lol.