Spieth upstages McIlroy, Scott to win 2014 Oz Open post firing final-round 63

American golfer Jordan Spieth, who started the week as the boy behind the pin-up boys, upstaged world number one Rory McIlroy and Adam Scott to win the 2014 Australian Open.

Spieth fired a final-round 63 to win his first tournament of the year, outshining the world number one and number three to claim a six-shot victory at The Australian Open.

It was a course record eight-birdie round of eight under, and according to the baby-faced Spieth, it was the best round he's ever played. He said that there's been a lot of close calls since the last time he won until now, admitting that it would be a lie if he didn't say that it was eating at him a little bit, Sydney Morning Herald reported.

Spieth said that it's tough when one gets so close so many times at big events against world class fields and they are not able to pull it off. He added that he didn't know it was a 63 until he signed the card, admitting that it was one of those rounds one is in the zone and one doesn't really care where they are at.

This year's Masters runner-up finished six shots clear of Australian Rod Pampling (-7), with Brett Rumford (-6), Greg Chalmers (-5), Scott (-4) and Jake Higginbottom (-3) rounding out the top six.

Spieth, who started and finished the day with four birdies in five holes, said that he still had a long way to go before he could think about a charge at the world number one spot.

He said that he believes if he had the follow-up year that McIlroy had this year, he believes he would be pleased this time next year, adding that that would be nice.

Spieth admitted that he is very far away, honestly, adding that this week was big because he was able to close it out. He said that he felt the pressure and felt the nerves and performed the best he has ever performed.

The win pushes Spieth, who last year became the youngest player in 82 years to win on the PGA tour, up from number 14 to number 11 on the world rankings, the report added.