If the Mets win two of three games against the Phillies -- regardless of what the Cardinals and Giants do -- the Mets clinch a Wild Card spot and home field for the Wild Card game.
However, if the Mets win just one of three from the Phillies, or get swept, and the Cardinals and Giants win a game or two, things get interesting...
Who gets home field, St. Louis or New York?
Technically, it's not decided yet. However, in order for the Cardinals to force a tiebreak, it means they went at least 2-1, if not 3-0, this weekend, which also means they'll end up with a better intra-division record than the Mets.