For those of you who don’t know, the definition of a “demonstration sport” is a game or event which is displayed for promotional purposes as an attempt to encourage interest in other countries. Baseball made its first appearance in the Olympics in 1912 in Sweden as an exhibition sport. A game was played between the US, the nation where the game was developed, and the host nation. The game was held on Monday, 15 July 1912 and started at 10 a.m. on the Ostermalm Athletic Grounds in Stockholm.
The Americans were represented by various members of the American Olympic track & field athletics delegation, while the Swedish team was the Vesterås Baseball Club, which had been formed in 1910 as the first baseball club in Sweden. Four of the Americans played for Sweden, as the Swedish pitchers and catchers were inexperienced. One Swede eventually relieved Adams and Nelson, the American pitchers. Six innings were played, with the Americans not batting in the sixth and allowing the Swedes to have six outs in their half of the inning. The game was umpired by George Wright, a retired American National League baseball player who also happened to be the brother of Harry Wright, the guy who pretty much invented professional sports in the US. One could argue that his Cincinnati Red Stockings of 1871 were the first professional athletes in the world, but that would be an untrue statement. Some dude named Gaius Appuleius Diocles in Rome in 146 A.D. can disprove that.