When I came to the WGC-Cadillac Championship here this week, my hope was to get some simple, straightforward insights into how golf coach Sean Foley works with his star pupils. I could have asked to focus on Tiger Woods, Foley's most famous charge, but Justin Rose is less loaded as a personality and makes a better case study. In the three years that he and Foley have been working together, Rose has risen from No. 76 in the world rankings to No. 5 and, depending on how you slice and dice the data, is now either the best pure ball striker in golf or merely one of them.