Herbert, who was playing alongside last week's PGA Tour winner Michael Thompson, carded a three-under final round to finish the event at even par.

The Bendigo golfer started off flying on the front nine with a trio of birdies on the opening holes.

He then made par on the fourth, before carding back-to-back bogeys on the fifth and sixth, followed by another birdie on the seventh.

He then carded two pars on the eighth and ninth to finish the front at two-under par for the round.

After the turn he went into safe mode with six straight pars on holes 10 through 15, followed by a birdie on the 16^th and then two pars to finish off before heading back into the club house.

He wrapped up the final round at the three-under (67), in addition to the first three rounds (71, 73, 69) to finish T49.

Other Australians in the field included Jason Day (T6), Marc Leishman (T52), Cameron Smith (T59) and Matt Jones (T59).

American Justin Thomas' five-under final round helped him secure a 13^th PGA Tour victory, three strokes ahead of Daniel Berger, Brooks Koepka, Tom Lewis and Phil Mickelson.

Herbert's top-50 finish in Memphis will be somewhat of a confidence booster, to be able to pull it off within a field that included the world's top-80 players.

Herbert's time in the United States has only just begun as he will now head to California to play in one of golf's four annual major tournaments.

Herbert will start in the PGA Championship this week at TPC Harding Park in San Francisco, where Brooks Koepka will be in action again to defend his championship.

Meanwhile this week fellow Australian Ryan Ruffels came close to his first win on the Korn Ferry Tour, finishing one stroke behind winner Seth Reeves.

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