Cleveland has 19 to play, White Sox have 17 to play.
If Cleveland goes 9-10, they finish 86-76.
Assuming 1 Cleveland win against Chicago, the White Sox would need to go 13-4.
If Cleveland goes 11-8, the White Sox need to finish 15-2.
Counting the one in progress, they have 6 remaining series. It is not far fetched to say they need to win every series and sweep 4 of them. Or in other words, if they lose 1 game to Cleveland, it is fairly likely that they can lose 1 more game this season.