Britain's Peter Norfolk and Mark Eccleston are guaranteed a tennis silver medal after winning through to the mixed doubles quad final.
The second seeds came from behind for a 2-6 7-5 6-1 victory over Dutch pair Monique de Beer and Bas van Erp.
They will face top seeds David Wagner and Nick Taylor in Sunday's final.
But Jayant Mistry and Simon Hatt went out 6-1 6-1 to Japan's Shingo Kunieda and Satoshi Saida in the quarter-finals of the men's doubles open event.
American Wagner will become a familiar foe for Norfolk as the pair meet in Friday's quads single match.