By ROGER PANTING

Scarlets .......................... 32pts
Tries: Halfpenny 8, Costelow 14, Williams 36, Conbeer 76
Conversions: Halfpenny 14, Costelow 36, 76
Penalties: Halfpenny 6, Costelow 68

Clermont......................... 30pts
Tries: Simone 21, Raka 30, 44; Beria 65
Conversions: Belleau 30, Plisson 65
Penalties: Belleau 3, 34
SAM Costelow held his nerve with a touchline conversion to win a thrilling game and send Scarlets through to a home semi-final.
It was rough justice on impressive Clermont, who overcame the loss of Irae Simone to a 24th minute red card to be the better ...