(AP Photo/Matt Dunham)

PORTRUSH, Northern Ireland (AP) Brooks Koepka's biggest asset during this year's British Open won't be in his bag, it'll be on his bag.

The four-time major winner will be walking around Royal Portrush, a course new to most of the players in the field, with a native expert helping him negotiate the sharp elevation changes of the century-old links course on the northern coast of Northern Ireland. His caddie, Ricky Elliott, is a local lad.

"Every hole I just step up on, `You tell me what to do. You've played it more than anybody,'" said Koepka, who is on such a roll at majors he may be one of the few players who doesn't need extra help. "So just let him figure it out. He knows his spots to miss it. The spots to come in from, with different hole locations and different winds."

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