Shane Lowry delayed going out to warn up for his final round BMW PGA Championship because he was glued to Ireland's Rugby World Cup opener against Scotland.

It was only when Andrew Conway crossed in the 56th minute to make the game safe did the Offaly man feel ready to head for the course, where he duly produced a sparkling six-under 66 to leave him 10-under for the tournament and make it a very satisfactory weekend.

"When we went 24-3 up I got up off my seat and went out to start my warm-up!" Lowry told RTÉ Sport's Greg Allen afterwards.

"I was happy it was done and dusted then. 'Bo' (caddy Brian Martin) had it on his phone on the range as well so we were watching a bit of it during the warm-up. It was a successful day all round. Ireland win and a 66 - it was nice. 

"I'm very happy the way things went for them. I'm going out there in a few weeks for the quarter-finals. I'm looking forward to it."

Lowry had a slow start to the tournament at Wentworth, posting rounds of 72 and 71 before finding his groove at the weekend.

On Sunday he was magnificent, negotiating wet conditions in a flawless round that was garlanded by six birdies. 

"I got off to a nice start and I just kept it going," Lowry added. "It was tricky out there. It was raining early on but I managed to play the holes in the wet fairly well. Then when the rain stopped and the wind died down it was beautiful for the last seven or eight holes. I took advantage of it.

"It's a good day, a decent week coming back after four weeks off, I'm happy enough.

"Four weeks off, coming into a big tournament of a tough golf course, I didn't know what to expect. I was happy to get through to the weekend. I knew once I did I could kind of make a run at it. I stayed patient all week. Thankfully that patience paid off."