Ian Keatley's ice-cool 77th minute drop goal gave Munster a well-deserved win at Glasgow last night.
It was enough to keep Rassie Erasmus's men on top of the table.
The Irish province made the perfect start when Keatley booted a penalty in the eighth minute.
Then, the out-half set up a try for full-back Andrew Conway from a pinpoint cross-kick, complemented by Darren Sweetnam's athleticism in the air, and nailed the conversion for a 10-point cushion.
It took out-half Peter Horne two shots to make one for 10-3 in the 15th minute.
Dave Kilcoyne saw yellow for taking out a lifter at the lineout, lock Jean Kleyn rescuing a perilous position by turning over a maul.
Keatley had two more kicks to make it a two-score game, making the second for 13-3 in the 37th minute.
It then took the impressive speed of Keatley to haul in centre Nick Grigg in the last play of the half.
There was a period of stalemate in which it became clear the next score would matter at the end of the three-quarter mark.
Out of nothing, Ali Price beat three flailing defenders on his way to the line for Rory Clegg to make it a three-point game.
A tremendous counter from Glasgow then put Mark Bennett into top gear which was too much for Keatley to cover in the 71st minute.
But Munster had enough tenacity to move forward and Keatley had the composure to knock over a drop goal to secure victory.