Diving into the FAQ threads and really learning/understanding how the game engine works, and then figuring out how to use that information to your advantage, will be a tremendous help.
What is the best strategy? That's a "How do I win?" type of question, and those are not generally met with great responses because it requires little effort on your part to simply be told how to win. Most owners are very willing to answer questions and share some insight, but for "How does the game work?" questions, not "How do I win?".
In very general terms, just as in the other sports, it's important to remember that SLB is not baseball. It's a statistical simulation set within the context of Major League Baseball. Winning is all about drafting your stats and adjusting your settings to give yourself the greater advantage over your opponent, while still understanding that even good teams can lose 40% or more of their games.