The best way is to look at previous games and see if he constantly uses the same tactics. Check to see the last time he logged on. If it's been a while, there's a good chance you'll guess right. But at best, you're just guessing, and he may have chosen your game to try something different. That's why simply guessing what tactic he's going to use is a toss-up. What I like to do is look at box scores and the roster page and try to identify his stronger players, then pair them up against my guys and see where the strengths/weaknesses are, and plan accordingly.