 Graeme Souness is the only player-manager during Rangers' history.The most successful manager in terms of the number of trophies won is Bill Struth with 18 League titles, 10 Scottish Cups and two League Cups, but the most successful manager in terms of trophies to time served is Walter Smith with seven league titles, three Scottish Cups and three League Cups in 7 years 42 days.Smith won three league titles, two Scottish Cups and three League Cups in the 4 years, 126 days of his second spell.