With spring training upon us, the oddsmakers are already buzzing with baseball's biggest question: Who will win the World Series in 2019? BetOnline, an online sportsbook, has the New York Yankees (6/1) as the odds-on-favorite to win the World Series with the Boston Red Sox (7/1) and Houston Astros (7/1) right behind them. The Los Angeles Dodgers (9/1) and Philadelphia Phillies (10/1) rounding out the top 5.