Britain's Prince Harry and Meghan, Duchess of Sussex attend the Boston Red Sox v New York Yankees match in London, Britain June 29, 2019.

Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex, watch the game between the Boston Red Sox and the New York Yankies at London Stadium. Mandatory Credit: Steve Flynn-USA TODAY Sports

Britain's Prince Harry and Meghan, Duchess of Sussex receive a present for baby Archie as they meet players of the New York Yankees before a match against the Boston Red Sox in London, Britain June 29, 2019.

Britain's Prince Harry and Meghan, Duchess of Sussex meet players of the Boston Red Sox before a match against the New York Yankees in London, Britain June 29, 2019.

Britain's Prince Harry and Meghan, Duchess of Sussex meet players of the Boston Red Sox before a match against the New York Yankees in London, Britain June 29, 2019.

Britain's Prince Harry and Meghan, Duchess of Sussex walk on the field before the Boston Red Sox v New York Yankees match in London, Britain June 29, 2019.

Britain's Prince Harry and Meghan, Duchess of Sussex arrive to attend the Boston Red Sox v New York Yankees match in London, Britain June 29, 2019.

Major League Baseball - New York Yankees v Boston Red Sox - London Stadium, London, Britain - June 29, 2019 Britain's Prince Harry and Meghan, Duchess of Sussex attend the match.

Britain's Prince Harry and Meghan, Duchess of Sussex pose with members of the Invictus Games Foundation and baseball players before the Boston Red Sox v New York Yankees match in London, Britain June 29, 2019.

Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex, before game between the Boston Red Sox and the New York Yankees at London Stadium. Mandatory Credit: Steve Flynn-USA TODAY Sports

Britain's Meghan, Duchess of Sussex is embraced as she meets players of the Boston Red Sox before a match against the New York Yankees in London, Britain June 29, 2019.

Britain's Prince Harry and Meghan, Duchess of Sussex receive a present for baby Archie as they meet players of the New York Yankees before a match against the Boston Red Sox in London, Britain June 29, 2019.

Britain's Prince Harry and Meghan, Duchess of Sussex receive a present for baby Archie as they meet players of the New York Yankees before a match against the Boston Red Sox in London, Britain June 29, 2019.

Britain's Prince Harry and Meghan, Duchess of Sussex pose for a picture with players of the Boston Red Sox before a match against the New York Yankees in London, Britain June 29, 2019.

Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex, watch the game between the Boston Red Sox and the New York Yankies at London Stadium. Mandatory Credit: Steve Flynn-USA TODAY Sports

Britain's Prince Harry attends the Boston Red Sox v New York Yankees match in London, Britain June 29, 2019.

Britain's Meghan, Duchess of Sussex attends the Boston Red Sox v New York Yankees match in London, Britain June 29, 2019.

Britain's Meghan, Duchess of Sussex receives a present for baby Archie as she meets players of the New York Yankees before a match against the Boston Red Sox in London, Britain June 29, 2019.

Britain's Prince Harry and Meghan, Duchess of Sussex pose for a picture with players of the New York Yankees before a match against the Boston Red Sox in London, Britain June 29, 2019.

Britain's Meghan, Duchess of Sussex attends the Boston Red Sox v New York Yankees match in London, Britain June 29, 2019.