Complex sentence: Making 374 league appearances in his eight years at Griffin Park, Graham tasted promotion from Division 4 twice, in 1971-72 and 1977--78, leaving in 1980 to join Addlestone & Weybridge Town.
Split into simpler sentences: Making 374 league appearances in his eight years at Griffin Park, Graham tasted promotion from Division 4 twice, in 1971-72 and 1977--78. Graham left in 1980 to join Addlestone & Weybridge Town.