George Seagar was a boiler maker by trade, living in Devonport on Auckland's North Shore. Seagar was one of the first rugby league footballers in New Zealand, representing
Auckland against
Taranaki in
1909. In
1909, he joined the
North Shore Albions club as a founding player and also served on the
Auckland Rugby League's management committee. Seagar played for both Auckland and
New Zealand against the touring
Great Britain Lions. He again represented New Zealand in 1911, being part of the
tour of Australia, although no test matches were played on tour. By
1912, Seagar was the captain of
North Shore Albions and he again represented
Auckland. He did return to Auckland after the war and resumed his career with North Shore playing for them until 1920. Seagar was also a well known member of the North Shore Rowing club.{{cite news His brother
Allan Wilfred Seagar would also play for North Shore in the 1920s and 30s and he represented New Zealand in 1930. ==World War I==