Rory McIlroy will enter the weekend at the Masters Tournament five shots behind the leaders but is confident he can use his previous experience of challenging at Augusta National to his advantage.
The World Number Two entered the final round in 2011 with the lead before a closing 80 and has been at the business end the past three years in claiming top ten finishes.
For two of those seasons he has entered the year's first Major Championship searching for the career Grand Slam and played over 100 practice holes in two weeks leading up to the event this year to try and help his cause.
So despite trailing the leading group of Sergio Garcia, Thomas Pieters, Rickie Fowler and Charley Hoffman, he is confident he will challenge again.
I know what can happen, good and bad around this golf course - Rory McIlroy
"There are still 36 more holes left to go - a long way in this tournament and I know what can happen, good and bad around this golf course," he said.
"A couple of years ago over the weekend I shot ten under par on the weekend and Jordan (Spieth) was just too far ahead and there are other times I've shot bad weekends and gone the other way.
"Anything's possible out there but I feel like I'm playing well enough and I'm in a good frame of mind where I can go out there and attack and make some birdies."
Justin Rose is searching for his second Major after winning the US Open in 2013 and rounds of 71-72 have left him three shots off the lead.
The Englishman was left frustrated by some mistakes made on Friday but remained happy with his effort.
"I think I got pretty much what I deserved," he said. "I played well. Even par is still a good score round here.
"Just a couple of mistakes stopped it from being a really good day. Coming up short with a wedge on 14 is a mistake you can't make and then bogeying 18 was a disappointing way to finish but, other than that, I birdied the par fives and hit some good shots.
"I'm in a decent position going into the weekend."
Unlike McIlroy and Rose, Spaniard Jon Rahm is playing his first Masters and sat alongside Rose at one under after 36 holes.
I'm in a decent position going into the weekend - Justin Rose
No rookie has won the Green Jacket since Fuzzy Zoeller in 1979 but Rahm, who has top threes in the year's first two World Golf Championships, is not fazed.
"First-timers don't usually have a great history at Torrey Pines either and I was able to win that," he said. "I kept that in mind.
"There's nothing that says I'm going to play bad or that I should play bad.
"I think I liked the conditions because I usually like tough conditions. I can keep the ball low and pars are my friend. On days like today, I was able to take advantage of my ball striking and I think I lucked out in that sense."
