Hudson missed Game 1 of the 2019 National League Championship Series to be with his wife in Scottsdale, Arizona, to witness the birth of their third daughter. Hudson was on the mound when the Nationals won the 2019 World Series. On October 30, 2019, he pitched the bottom of the ninth inning of Game 7 of the World Series, striking out two of the three batters he faced (José Altuve and Michael Brantley) to close out a 6–2 victory as the Nationals defeated the Houston Astros to win the 2019 World Series championship. He signed a two-year, $11 million contract to stay with the Nationals on January 6, 2020.