Taking advantage of playing partner Kelly Kraft's two late bogies, Herman finished with a two-under 70 for a one-stroke victory at 26-under 262 in Nicholasville, Kentucky.

A shot ahead with three to play, Kraft bogeyed the par-3 16th and par-4 17th in a closing 70.

Trump's regular golf partner while working as an assistant professional at Trump National Bedminster in New Jersey, Herman changed to a conventional putting grip and clubhead at the president's suggestion following a recent round.

"I think I need to see him again soon … He motivates me and puts me in a good spot." – Jim Herman

The putter cooled off a bit on Sunday after Herman opened with rounds of 65, 65 and 62, but he did just enough to edge Kraft – who shot 61 on Saturday – for his second PGA Tour title.

Encouraged by Trump to pursue a playing career, the 41-year-old Herman won the 2016 Shell Houston Open for his maiden tour title – a victory that also followed a friendly round with Trump.

"I think I need to see him again soon," Herman said on the 18th green after a winning tap-in par. "He motivates me and puts me in a good spot."

Sepp Straka was third at 23-under after a 66.

Sydneysider Matt Jones finished fast with a 63 to tie for fourth with Austin Cook (70) at 22 under.