Reading the breaks and undulations, controlling the speed and getting the ball started on line... these are just a few keys to successful putting week-in and week-out on the PGA Tour.

And when the players arrived to Pinehurst No. 2 for the U.S. Open this week, they knew that the putting surfaces were going to test their mettle and ability to stayed focused on all of these keys.

So we headed over to the practice green to catch up with the Scotty Cameron Tour Reps and take in all of the sights and sounds as players warmed up on the greens. Check out the slideshow above for a glimpse of the action from earlier in the week.