After admittedly failing the test the last time he faced it, Jason Day is confident he can survive and thrive at any major championship extra hole situation at St Andrews.

Despite dropping two shots in a farcical 30 minute resumption of round two in severe winds Day remains well poised at the Old Course at six-under for the championship through 13 holes of his second round, just three off the pace set by Dustin Johnson and Danny Willett.

The prospect of having to play more than 18 holes in a day remains as officials will look to catch up on schedule when play eventually resumes.

The Queenslander had little sleep on Friday night after finishing at dark near 9:45pm and resuming with a 4:30am wake up.

But while the wind cost him two shots, it might have given him the reprieve and rest he needs.

The 27-year-old was faced with a similarly long day in New Orleans earlier this season on the US PGA tour and became bogged down and tired with six holes to play, ultimately fading from the lead to fourth place.

His fitness was again brought into question at the US Open when he collapsed with vertigo but the Queenslander heroically battled through it.

“Right now I need to grind it out as much as possible. I have to just knuckle down and do it and worry about getting my rest on Saturday night,” Day told AAP.

“The short turnaround is going to be tough on us but that’s just how it is.

“I will just have to embrace it and go with it as part of the British Open challenge. The key is I have to stay patient. It is not the first time I’ve had to play extra holes, I understand what I need to do to manage it and I have to be very careful not to get frustrated with myself as that will be easy to do on such a long day.

Coach and caddie Col Swatton believes the different weather conditions and the importance of the tournament will ensure his charge will be up for the fight.

While the days will be long, and with brutal winds, he remains upbeat.

“I think the biggest thing is it is a lot cooler than it was in New Orleans and he’s a little bit fitter, he’s been taking the medication (for his vertigo) and I think he will be fine,” Swatton said.

“It’s a major championship and I’m sure he will get up for it.”