The Cincinnati Red Stockings went undefeated with a 57-0 season record in 1869. They were the first and only professional team to go undefeated, but not the first in the history of baseball. What was the first baseball team to ever have an undefeated season?

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The Atlantic Base Ball Club, of Brooklyn Atlantic was undefeated in 1864, winning 19 games, and was recognized as National Champions. Atlantic, upon a challenge from the Young Canadian Club of Woodstock, Canada, Country Champions, traveled to Rochester and beat the Young Canadians, 75-11. In January 1865, Atlantic played Gotham a series on ice skates for a silver ball, winning 2 of the 3 games. Atlantic again went undefeated in 1865, winning all 23 games and was declared National Champions. Undefeated since 1863, they lost their second game in 1866. Atlantic remained champions for 1866. In 1868, Atlantic embarked on an extensive western trip, winning 16 of 17 games, but finished second for the year. The 1869 year ended up with the Atlantics again the winning team. On Tuesday, June 14, 1870, the Cincinnati Red Stockings, base ball's first all professional team, had their two year winning streak ended by the Atlantics at the Capitoline Grounds in Brooklyn. In what was called the finest game ever played Atlantic defeated Cincinnati 8-7 in 11 innings. http://www.brooklynatlantics.org/history.php Oct 07 12, 12:30 PM