History is also against Dustin Johnson -- no-one has ever won a U.S. Open after winning the week before -- but then again he's a man rested (after injury), on form after his Memphis triumph and with the length to leave himself more lofted clubs to those slick, well-guarded putting surfaces.

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"When you have the pleasure of working with the No. 1 athlete in the world, that's a no-brainer, " said Glance, who won gold as part of the U.S. 4x100-meter relay team at the Montreal Games in 1976.

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Golf star Rory McIlroy, who won the 2011 U.S. Open, is currently dating former tennis world No. 1 Caroline Wozniacki.

CNN: 15-love: Top tennis romances

Last year, McIlroy won his second major -- adding the PGA Championship to the U.S. Open title he won the year before -- while also becoming world No. 1 for the first time.

CNN: McIlroy teams up with Tiger at Nike