Nick Evans landed a penalty to briefly stem the flow of points .
When the Scarlets probed the right wing once more - this time through the marauding Shingler - their line was in danger of cracking for a second time .
Nick Evans landed a penalty to briefly stem the flow of points , but when the Scarlets probed the right wing once more - this time through the marauding Shingler - their line was in danger of cracking for a second time .