Ireland’s Jonny Sexton holds nerve to seal Six Nations draw with Wales

• Ireland 16-16 WalesWe thought this Six Nations might be a tight one, and on a weekend of slender margins the last instalment proved the tightest. So tight, a winner could not be determined. Wales almost pulled off a remarkable comeback, turning a 13-0 deficit before the half-hour was up into a winning position with only a few minutes remaining. Rhys Priestland, who had been thrown into the fires of a mighty set-to between two physical sides when Wales lost Dan Biggar to an ankle injury in the first half, grew into the game by degrees. His long-range penalty was a commendable display of nerve…