Jack Brennan
Catcher
Born: (1862-09-15)September 15, 1862 St. Louis, Missouri
Died: March 24, 1914(1914-03-24) (aged 51) Koch, Missouri
Batted: Right Threw: Right
MLB debut
April 20, 1884, for the St. Louis Maroons
Last MLB appearance
October 4, 1890, for the Cleveland Infants
MLB statistics
Batting average	.220
Home runs	0
Runs batted in	48
Stats at Baseball Reference
Teams
St. Louis Maroons (1884–85) Kansas City Cowboys (1888) Philadelphia Athletics (American Association) (1889) Cleveland Infants (1890)

Jack Brennan (born as Gottlieb Doering) was an American professional baseball catcher in the late 19th century. In his five-year career he played with the St. Louis Maroons, Kansas City Cowboys of the American Association, Philadelphia Athletics of the AA, and the Cleveland Infants.

Brennan was born Gottlieb Doering in St. Louis, Missouri in 1862. After his playing career ended in 1890, he continued to work as an umpire in the St. Louis Area.^{[citation needed]}

• Career statistics from Baseball Reference, or Baseball Reference (Minors)

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