Two Australians are tied for the lead after the morning rounds on day two of the US PGA National.

Marc Leishman and newcomer Oliver Goss are at six-under after each shot 66 during the second round on Friday on the Blue Course at Congressional Country Club.

Leishman has one PGA Tour win.

Goss is playing in his second tournament as a pro and was the low amateur at the Masters in April.

First-round leader Greg Chalmers has an afternoon tee time after a 66 on Thursday.