Allport began playing rugby as a youth, playing and later captaining the
London International College School team. For a short time Allport also played for
Sutton RFC. Allport graduated from the London College to
Guy's Hospital, which had a renowned rugby team. He was given the captaincy of
Guy's Rugby team, which went through a successful period under his leadership. From Guy's, Allport joined Blackheath, the team he would represent throughout his three-year international career. Allport gained his first international cap when he was called into the England team for the encounter with
Wales as part of the
1892 Home Nations Championship. Despite England's crushing defeat of Wales, Allport was replaced by the returning
Sammy Woods for the remaining two games of the Championship. England won all three international games in 1892, making Allport a
Triple Crown-winning player. The next season, Allport was given another international cap, chosen for the team to face
Ireland as part of the
1893 Championship. The Irish game was the only win for England during a season dominated by the Welsh team. Allport was selected for all three games of the
1894 Home Nations Championship, which started with a win over the previous year's winner, Wales. The next two matches, against Scotland and Ireland, both ended in defeat for England, and Allport was never selected for his country again. ==Other sports==