Baseball is a millimetric sport. Some blows can be fielded by being positioned in the correct part of the ground, just as there are others that escape by just a couple of centimeters. However, there are some who, due to their trajectory, put physical integrity at risk, mainly that of players, coaches, and people who are on the pitch. That is why the helmet for baseball was invented.
The first attempts to create protections came in 1905. However, it was not until 1908 when Roger Bresnahan, Hall of Fame receiver, was beaten, giving way to the creation of skin protection that basically covered the ear and the temple.
The prototypes changed, and the protection began to take shape thanks to the helmets used in the polo. The first league to formally adopt the helmet for all players was the International League (Triple-A category circuit) for the 1939 season.
Buster Mills was the first professional player to wear a helmet, and a year later, the second baseman for the White Sox in Chicago, Jackie Hayes, was the first to use protection in a game of Major League Baseball.
By 1941, the National League organizations adopted the helmet during the preseason. However, teams such as the Brooklyn Dodgers and the Washington Senators made use of the device throughout the season, while others joined the initiative by halves of the calendar.
In 1956, the old circuit made the use of helmets mandatory for all its teams. However, it was until December 1970 when Major League Baseball adopted the measure for all organizations, with the characteristic that the regulations are not retroactive, for which, the players who had started their career before the date, had the option of not using protection.