Williams was on the bag for 13 of Tiger Woods' majors, and read the putt that helped Woods to the 1999 PGA Championship.

NPR: Scott Beats Cabrera In A Playoff At Augusta

Under darkening clouds no sudden-death playoff at the Masters had ever gone more than two holes Scott said he could barely read the putt.

NPR: Scott Beats Cabrera In A Playoff At Augusta

But the books they use are so detailed they almost read themselves, and there is no one a player like Tiger Woods trusts more to read a putt them himself.

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