As a lifelong Chicago Cubs fan, Craig Sager always knew his team's day would eventually come.

After it finally did early Wednesday morning in a thrilling win over the Cleveland Indians in Game 7 of the World Series, Sager's son, Craig Sager II, tweeted out a page from his dad's soon-to-be-released autobiography, "Living Out Loud" that says he has been betting on the Cubs to win it all since 1981 and put $1,000 on them to win the 2016 World Series before the season began.

Congrats to the @Cubs and my Dad for finally being able to cash in after 35 years. #FlyTheW #LivingOutLoud pic.twitter.com/LgpVYMujtJ — Craig Sager II (@CraigSagerJr) November 3, 2016

The Batavia, Illinois, native grew up going to Wrigley Field and cheering on his favorite team. He threw out the first pitch before a Cubs game earlier this season and thrilled fans by serving as the guest conductor for "Take Me Out to the Ballgame" during the seventh-inning stretch.

Just two Cubs fans celebrating a successful procedure, a birthday & a WORLD SERIES in the same day!!!! #SagerStrong #ThankYouCubs pic.twitter.com/zvWU7XoDS8 — Craig Sager II (@CraigSagerJr) November 4, 2016

The eternal optimism that Sager has shown throughout his professional life, especially during his public battle with leukemia over the past few years, has made him even more endearing to millions of fans all over the world. The loyalty he has shown to the Cubs after all these years will finally pay off as well.