I got this from the Geoff mangum putting site from the post Detailed putting stats for touring pros
Swing gurus do double duty as putting coaches after having penetrated the protective world of Tour pros, and this is generally not a good thing. Tiger Woods' father barred Butch Harmon from teaching Tiger putting (see the dad's interview in Golf Digest a year or two ago, and Butch is not very knowledgable about putting anyway), and Tiger now relies mostly on Mark O'meara and O'meara's swing coach Hank Haney. Haney basically takes his putting cues from Mark O'Meara. It's no coincidence that Tiger and Mark share about the same bottom-rung putting stats. Annika Sorenstam studies with Dave Strockton Sr on occasion (Cali-folk). Thorpe on the Senior Tour studied with Jerry Barber. Rocco Mediate works on putting with an airline pilot named Rick Sonnier. Stan Utley, the Nationwide Tour putting guru to Jay Haas, visits periodically with Memphis swing guru Rob Akins to get his setup adjusted. Mickelson has studied with Crenshaw and now Pelz. Davis Love's swing coach Jack Lumpkin relies on others, apparently including Mike Shannon, to teach Daivs about the stroke in putting. Last week, Mickelson muffed two 5-footers to drop out of the lead in Phoenix down the final stretch. Stuart Appleby mostly follows his own counsel, as does Furyk and Roberts. Faxon keeps his stuff pretty private, and his "good stuff" has little to do with Bob Rotella or Scotty Cameron thoughts or advice.
Tiger Woods Mark O'Meara/ Hank Haney teaching combo. Brian what are your thoughts on this? How do you see it working out for Woods? Clearly Mr Mangum is not overly impressed with their putting advice.