51�Թ�

Rose was as pristine at Augusta National as the postcard day, making birdie on his first three holes before collecting five more on his way to a seven-under-par 65 that put him atop the leaderboard.

"Show respect to the land and the people who have kept it pristine for your adventures."

The manicured grass around the entrance to Augusta National is pristine.

Black mustard grows quickly and will soon be sending out seeds that could easily invade the pristine soil on the structure.

"You could be forgiven for watching those first episodes and thinking that these people were living in pristine environments in the middle of nowhere, untouched by the outside world," he says.