I know this is a once in a century sort of thing, but on this date in 1935, the Cubs won the first game of what became a 21 game winning streak. The winning pitcher for the Cubs was Larry French (photo).
When the streak began, they were in third place. They ended up winning the pennant by 4 games. Then they lost the World Series to the Detroit Tigers.
Is it possible they'll do it again this year? Stranger things have happened.*
*Um, but don't ask me to name any.