|Date of birth||?|
|Place of birth||Buenos Aires, Argentina|
|Date of death||?|
|* Senior club appearances and goals counted for the domestic league only|
McKechnie was born in Buenos Aires, member of a family of Scottish origin. He began his career in 1891 in Alumni. The next team in which he played was Lomas Academy, winning the Argentine Primera División championship of 1896.
In 1897 McKechnie played in Lobos Athletic Club, team where he came runner-up in 1898 and 1899, where the team lost the final match to Belgrano Athletic Club. In 1900 he moved to Buenos Aires English High School (then renamed "Alumni") that would win a large number of titles until its dissolution in 1911.
- Argentina - First Level 1903, Rec.Sport.Soccer Statistics Foundation
- Argentina 1896, Rec.Sport.Soccer Statistics Foundation
- Argentina 1899, Osvaldo José Gorgazzi - Rec.Sport.Soccer Statistics Foundation
- "El arte de atajar - parte uno", El Gráfico, 17 Nov 2008
- Argentina 1900, Rec.Sport.Soccer Statistics Foundation
- Argentina 1902, Rec.Sport.Soccer Statistics Foundation