Hamilton Accies won the all-First Division tie against Livingston to set up a Ramsdens Cup final .
Mark McLaughlin claimed the game's only goal, the defender heading home two minutes before half-time.
The visitors' Stefan Scougall and Iain Russell had earlier had shots blocked.
Livi continued to press in the second half and Kenny Deuchar headed over before Russell was denied by goalkeeper Tomas Cerny.
Hamilton: Cerny, McAlister, McLaughlin (Chambers 73), Canning, Hendrie, Gordon, Mensing, Crawford, Imrie, Lyle (Spence 76), Andy Ryan (Paterson 73). Subs Not Used: Hutton, Anderson.
Booked: Canning, Imrie.
Goals: McLaughlin 43.
Livingston: McNeil, Kyle Jacobs (Ross Docherty 18), Craig Barr, Watson, Talbot, Scougall, Sinclair, Fox (Boulding 82), Bobby Barr, Deuchar (McNulty 67), Russell. Subs Not Used: Jamieson, Brown.
Booked: Craig Barr, Russell, Talbot, McNulty.
Ref: Charlie Richmond