George Summers, known as Bertie to his friends, enjoyed his first major success at Crystal Palace in 1902 when he won a one-mile handicap race. A member of Paddington CC, Summers and V. B. Casey finished second in the one mile tandem at the 1905 NCU Championships at Birmingham. The following year, Summers won the NCU London Centre 10-mile Championship. He made 1906 a memorable year by winning the Dubonnet Cup in Paris and then competed in the sprint at that year’s World Championships in Geneva. Two years later Summers was World Champion when he won the tandem title with Johnnie Matthews at Leipzig. Matthews normally rode tandem with Leon Meredith, but Summers stood in as a late replacement. The month after the Worlds, Summers reached the semi-final of the quarter-mile race at the British Empire Championships at Belfast.