The Philadelphia Phillies are favored to win the World Series as the Major League Baseball postseason begins Tuesday, although who their biggest threat may be is varied among sportsbooks. However, DraftKings is offering the Seattle Mariners at +450 ahead of the Dodgers at +500, while FanDuel has both teams at +550. Milwaukee has only the sixth-shortest odds among the 12 playoff teams at BetMGM, where they are +800 behind the Phillies, Dodgers, Mariners, Yankees and Blue Jays. That sets the Brewers up as a potential loss for the book, where they are currently the biggest remaining World Series liability. “The Dodgers and Brewers are two of the most popular bets to win the World Series,” BetMGM senior trader Halvor Egeland said.