Stretch run math
The Reds stand 74-48 (.606) with 40 games remaining.
The Reds lead Pittsburgh 67-54 (.563) by 6.5 games
The Reds lead St Louis 65-56 (.537) by 8.5 games
What will it take for the Pirates and/or Cardinals to catch the Reds?
If Reds go 24-16 (.600) rest of the way (98-64):
Pirates must go 31-10 to tie
Cardinals must go 33-8 to tie
If Reds go 20-20 (.500) rest of way (94-68):
Pirates must go 27-14 to tie
Cards must go 29-12 to tie
If Reds go 15-25 (.375) rest of way (89-73):
Pirates must go 22-19 to tie
Cards must go 24-17 to tie