We put a cult classic driver up against its modern-day descendant on a swing robot and the results are in. But first, a smorgasbord of PGA Championship equipment notes, featuring Brooks Koepka's new putter, all 31 of Justin Rose's McLaren irons, Rickie Fowler's shortest driver of his career and a new L.A.B. Golf prototype putter appears. And would Cameron Young's golf ball actually conform under the proposed rollback rules?

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