Cardinals win the central if:
STL HOU CIN
6-0 x x
5-1 x x
4-2 4-1 x
3-3 3-2 4-1
2-4 2-3 3-2
1-5 1-4 2-3
0-6 0-5 1-4
Astros win central if:
HOU STL CIN
5-0 3-3 x
4-1 2-4 4-1
3-2 1-5 3-2
2-3 0-6 2-3
Reds win central if:
CIN STL HOU
5-0 2-4 3-2
4-1 1-5 2-3
3-2 0-6 1-4
Tie possibilities
STL HOU CIN
3-3 4-1 5-0
2-4 3-2 4-1
1-5 2-3 3-2
0-6 1-4 2-3
(lifted from another site)
Also, historically speaking, if the Cardinals did end up losing the division, it would technically be the biggest choke job in baseball history, no? 8.5 back with 13 to play whereas the '64 Phillies were 6.5 up with 13 to play?