Play is set to begin imminently.
The start of the 105th PGA Championship has been delayed due to frost on the Oak Hill course.
Organisers haven't announced when play will begin, only that tee times would start 75 minutes after practice facilities open.
There are four Irish players in the field of 156 - Rory McIlroy, Shane Lowry, Seamus Power and Padraig Harrington.
McIlroy, Lowry and Harrington are all due to tee off within 10 minutes of each other while Power is out with the late starters.
Lowry feels the New York course will really test the field this week
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