George Herbert Hirst, born in Kirkheaton in 1871, had been Yorkshire's first-choice all-rounder since the mid-1890s. By 1906, aged 35, he was a fast-medium left-arm bowler famous for the 'swerve' (a kind of in-swinger) and a hard-hitting middle-order batsman. The 1906 county season was an English summer of unusually fine weather, but no one expected what followed.
In 35 first-class matches Hirst scored 2,385 runs at 45.86, including six centuries, and took 208 wickets at 16.50. Both numbers were extraordinary on their own; together, they are unique. He passed the 1,000-run / 100-wicket double by the end of June, two weeks faster than anyone else in the history of first-class cricket. By the end of August he had passed 2,000 runs and 200 wickets — the first man to do so in a single season, and (over a century later) still the only one.
Yorkshire won the County Championship by a wide margin. Hirst's individual highlights included 169 not out and 6 for 28 in the same match against Somerset at Bath, in which he became the first man to score a hundred and take both six- and seven-fors in the same first-class fixture. He was named one of Wisden's Cricketers of the Year for the 1906 almanack (in respect of the 1905 season) but the 1906 performance dwarfed even that recognition.