Venables and Grubb exchanged penalties but Ballard sealed a semi-final spot for his team with his second try .
Penalties meant Saltash lead 26 - 25 going into the final few minutes .
Venables and Grubb exchanged penalties , which meant Saltash lead 26 - 25 going into the final few minutes , but Ballard sealed a semi-final spot for his team with his second try .