Major League Baseball
Barack Obama has backed the move by big names including Naomi Osaka and LeBron James.
Change of heart follows a weekend of golf and after two Yankees players knelt during the national anthem at a stadium in Washington.
A child was struck by a baseball during a game between the Chicago Cubs and the Houston Astros in Houston, Texas. Cubs player Albert Almora Jr hit a foul ball which reached the crowds in the stands. Immediately after, the child was seen being picked and taken away by people who were with her, as teammates and stadium staff consoled Almora. The girl was taken to hospital, but her condition is not known.