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Charting greens at the Riviera CC

By Ron Wilkerson, BreakMaster President

BreakMaster  was invited by the Riviera Country Club to measure the slope of their  greens prior to the Northern Trust Open 2008. Of course, the main tool  we used in measuring the greens slope was the BreakMaster Digital Green  Reader - the pro's choice for reading greens, and a tool that's used by  hundreds of pros and tournament committees on all the major and minor  tours. 

The Satellite Image

We  began with a satellite image of each green that was downloaded from the  internet. Image quality is getting better all the time from such  sources as Google Earth™ and others. The image here is courtesy of  Google Earth™ and shows the green on hole #1 at Riviera. The line in the  center of the image is a straight line to the middle of the fairway.  This was drawn by using the measuring tool on Google Earth™ site.  All  greens measurements reference the middle of the fairway. 

The Template

The  satellite image was used as a template and converted to an outline  using an illustrator program (Adobe Illustrator, for example). This process was done for all 18 greens  and was printed out on 8.5"x 11" pages (Greens Maps) prior to the visit  to the course. Center lines (both horizontal and vertical) were  established in order to divide each green into four quadrants that can  then be accurately measured. 

Green Reading Tools

The  tools of the "Greens Measuring Trade." At Center is the BreakMaster  Digital Green Reader, taped here to a Leveling Skid to eliminate the  effect of bumps and ball marks when dragged across the green. Also  important are the Centering Sticks - two pieces of 8' pine (1.25"x .25")  that have a center screw and alignment lines to facilitate exact  perpendicular indication. Also a 300' measuring tape, the Greens Map  pages on a clipboard and some golf hats that are used for indicating  measuring lines on the greens. 

Finding the Center of the Green

The  next stage is to use the measuring tape to precisely measure each green  to find the center lines. This process establishes not only the exact  width and depth of each green but is also very important for finding the  exact Center Point of the green. All measurements of the green begin  from the Center Point. 

The Center Point

The Center Point on each green is marked with a typical ball marker. Then the Centering Sticks are placed over the center mark.  The Center Point on each green is marked with a typical ball marker. Then the Centering Sticks are placed over the center mark. 

Finding the Center of the Fairway

The  Centering Sticks are placed with reference to the center of the  fairway. The first stick aims directly down the center of the fairway  (along the "depth" line of the green), regardless of the immediate  approach from the green - seen here on the right. This makes sure that  all the measurements are accurate and readable on the course. Next,  alignment lines on the Centering Sticks allow the horizontal stick  (along the "width" line of the green) to be placed exactly along the  horizontal center. 

The Measuring Lines

It's  helpful to use some objects on the green to make sure that green  readings are taken accurately along an exact line. Here we're showing  the measuring tape placed at the far (fairway) end of the green and a  hat placed at the near end of the green. This is the first line along  which measurements will be taken. 

The Leveling Skid

To make it easier to take multiple readings along a line, we taped the BreakMaster to a plexi skid and pulled it along with a string. 

Charting The Greens

This  is an example of how the notes are taken. Notes are taken with Arrows  showing the break direction at each measuring point on the green (with  reference to the Centering Sticks). Numbers are written showing the  Degrees (break amount) at each measuring point. As the BreakMaster is  dragged across the green the break direction and the amount of break  will frequently change. Sometimes radically -as you see at the upper  right part of this green. 

Using The Cut Lines

Sometimes,  it is helpful to use the "cut lines" when measuring the green - but  only if they are cut in the same direction as the Centering Sticks  indicate. Once a line along the green is measured, then we move the hats  (or other indicators) two yards to the left (or right) and take another  line of break readings. In this way, the entire green is then measured  and recorded. 

The Greens Chart

Here  is the final greens chart, ready to be assembled into a Greens Book that  will help the pros and other golfers to lower their scores by knowing  the break in advance of their approach shots and putts. This map is of  hole #1 on Riviera. How get the other 17 holes?  Get a BreakMaster and make a  Greens Book for your own favorite course!  Blank Custom Greens Books are included with each BreakMaster purchase.  More are available in our online STORE. 

The Riviera Greens Book

Here  is the final Greens Book, used by a number of golfers in the Northern  Trust Open.  One of them, Scott McCarron, came in Number One in putting  for the tournament. 


He attributed his success to the fact that,  because he was using our Greens Book, he knew which way the ball would  break before he made his putt.  


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