Hopefully we will win tomorrow. Don't want to get swept by the Stros and/or fall too far back. Now 2 gms back after being 2 up a week ago, ugh.
The half game thing comes into play when one team has played more games than the other. And you pick up/lose a half game if your team just played and the other team hasn't played yet or doesn't have a game that day. You only pick up a full game if your team wins and the other team loses.
So if the Sox were 50-49, and the Yankees were 49-49, the Sox would be a half game up, b/c they have one more win, but the same number of losses. (You would also be a half game up if you had the same number of wins, but 1 less loss)
And then as far as picking up games. Using the same records, if the Yankees were to win, and the Sox didn't play, the Yankees would go to 50-49 and pick up that half game in the standings. (And then later on if the Sox won the half game the Yanks picked up would be erased and the Sox would go back to being 0.5 gms up, if the Sox lost then the Yankees would pick up another half game and go ahead of the Sox by 0.5)
Anyway I hope that (Long) explanation helps and isn't too confusing and I hope the Yankees never actually do go in front of the Sox