The Los Angeles Dodgers opened as -140 favorites over the Houston Astros in the 2017 World Series.
The price grew overnight to -160 as of Sunday morning.
The Dodgers haven't reached the World Series since 1988 while the Astros have only reached the Fall Classic once in their history (2005).
The Dodgers began the year at 10-1 to win the World Series. The Astros began the year as 12-1 favorites.