Golf caddy Steve Williams drew condemnation from pro golfers and sports writers alike last week for self-promoting "the best win [he's] ever had," after caddying pro golfer Adam Scott to a World Golf Championship. Their complaint: Caddies don't win championships, golfers do. Lawrence Donegan, the Guardian's golf correspondent and author of "Four-Iron in the Soul," which is based on his experiences as a caddy, talks with Melissa Block about the job and what kind of impact caddies really have.