That's because Bublé's favorite player is facing his favorite team.
Bublé grew up a Blue Jays fan in British Columbia. He has since become enamored with the Dodgers' two-way star Shohei Ohtani, who started using Bublé's "Feeling Good" as his walk-up song this season.
Bublé says he really can't believe he - and his song - are playing a small part in baseball history.
As for his conflicted feelings, in the end he says his heart is in Canada. He's cheering for his Blue Jays but hopes for a great series.