"We had a lot of fun out there as a group," a 3- under Jordan Spieth said." Curtis (Luck) has a really impressive short game and obviously he struck the ball nicely as well but anytime he got into trouble it felt like it was a tap in which is something you definitely need to have to contend for a championship."

Besides Luck four other amateurs are under-par after 18-holes.

Travis Smyth is 3-under in a tie for eighth, Harrison Endycott and Daniel Hillier are part of a big group at 2- under in tie foe 16th while Brett Coletta is tied for 33rd at 1-under.

Smyth got as low as 4-under during his round before settling for a 69 that left him just two off the pace. During his five birdie, three bogey round Smyth's best golf came from Nos. 6-8 when he carded circles on all three holes.

Endycott was able to overcome a rocky start to reach red figures with still three rounds remaining. Teeing of on No. 10 Endycott double-bogeyed the 15th to fall to 3-over before turning things around. Endycott responded with birdies on two of the three next holes and then rolled in four more birds against only one bogey on his second nine.

Daniel Hiller reached the 2-under mark with a five birdie, three bogey round. Starting on the back nine Hiller converted his first birdie on his opening hole. From their birdies came on Nos. 13, 16, 1 and 2.

Recent Queensland Open winner Brett Coletta was able to remain in red figures despite a pair of double- bogeys. Coletta came storming out of the gates with a bogey-free 4-under 32 on the frontside. However, the the two blemishes on the 11th and 17th holes dropped him back to 1-under before he was able to regain some momentum thanks to a closing hole birdie.