Australian John Millman has reached hist first ATP Tour semi final, defeating world No.15 Richard Gasquet in the quarter-finals of the Winston-Salem Open.

Millman won the match in straight sets, 7-5, 6-3, to set up a meeting with either Pablo Carreno Busta or Andrey Kuznetsov.

The victory over Gasquet is Millman's highest ever ranked scalp.

“It's been real great to play here all week, it hasn't been easy,” Millman said.

“Richard is a great player and he makes you work so hard for every point.”

The win is the ideal preparation for the world No.81 as he readies himself for the final Grand Slam of the year, the US Open, next week.