10 Dec, 12:23
Ireland's John Lacey will referee his first ever RBS 6 Nations match in February, while Alain Rolland is also included in the Elite Panel in what is his last season.
And it was Cregan who sealed victory for Shannon. They trailed 15-13 after 58 minutes when Jeremy Staunton (pictured) knocked over his fifth penalty. That score co-incided with the harsh yellow carding of Alan Quinlan that saw Shannon reduced to 14.
However they showed plenty of resilience to dominate the closing stages and Cregan landed three penalties in the final quarter to seal victory.