Well...I believe that God can control everything. He just doesn't. Like free will for example, God gives us free will because he loves us and because he wants us to choose to love him, because that's real love. He certainly could interfere with our free will, but he never would.
Maybe free will wasn't a perfect example...here's a quote from Albert Einstein: "I, in any case, am convinced He does not play dice with the universe." I think that there is some truth in that. If I were God, I certainly wouldn't want to know everything before it happens--that would be very tedious, knowing the future. That being said, God does know the future so...
Alright, here's my final argument: God blesses all of us with certain skills. Some are stronger, some are faster, some know the heart of God more, some are blessed with luck...the list goes on and on. Those gifts are not out of God's control, just look at Samson. God has the ability to affect luck as well (read 1 Samuel 9-10). But, if God is not interfering with the dice or the lots or the cards or the circumstances, then I believe our God-given luck can change the outcomes of events more towards our favor. I believe Jacob (Israel) was a very lucky man (Genesis 30:31-39). Laban promised Israel all of the lambs with blemish, but then he took the blemished lambs away so Israel couldn't get any! But all of the white sheep began giving birth to streaked, speckled, and spotted lambs. I'd call that lucky. Perhaps that was merely God interfering specifically for Israel, but...
I also consider myself a lucky person. Just ask my brothers, they know. The first time I played poker I got a Royal Flush (best hand possible). Whenever I roll dice for a board game, I always seem to get 5's and 6's. I don't see any need for God to interfere with something as trivial as a board game or a card game, so I feel that he has blessed us all with some randomness, some more than others. On the other hand, maybe the blessing of luck is a promise by God to interfere with the events in this world to tilt them in our favor.
Those are my theories, anyways.