Brooks Koepka is expected to be announced as the latest player to join the Saudi-backed LIV Golf Series in the coming days.
The four-time major champion is understood to be in line to make his debut in Portland next week.
World number 20 Abraham Ancer last night confirmed his decision to join.
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But reigning Open Champion Collin Morikawa has dismissed rumours he has agreed a deal with the breakaway tour.