William Leslie was a Scottish-Argentine footballer who played as a defender for Lomas Athletic Club. and the Argentina national team.

Career Leslie began his career in Lomas Athletic Club, team where he had won the first division championship 1893, and it had been the top scorer with 7 goals. Between 1900 and 1904 Leslie played in Quilmes Atlético Club.

In 1902 Leslie played in the Argentine team, who had played his first match against the Uruguay team.Así formó la primera Selección Argentina on Mundial de Fondo, 20 July 2020 The match was played on 20 July 1902 in Montevideo, with a score 6–0 in favor of Argentina.Argentina team archive by Héctor Pelayes on the RSSSF Some of the Argentine goals were scored by Charles Dickinson and Juan Brown.Uruguay 0 v Argentina 6 by T. Casale, 20 July 2015

Titles Lomas Athletic Primera División: 1893, 1894, 1895, 1897, 1898 Lomas Academy Primera División: 1896

References