The home team Houston initially took control of the game and led by 2-0 before the final inning of the game when the visitors struck back.
This is the first time that the Washington Nationals have won the World Series title and a nice revenge for the team, whose season began shakily.
The team had Montréal at home until 2005. The most recent World Series title was awarded to teams from the US capital in 1924 when the Washington Senators won. That team has in turn relocated to Minnesota and has been named the Minnesota Twins since 1961.
Houston won last 2017 and was the favorite for the final series of the year. Last year's champion became the Boston Red Sox.