But with he and fellow leaders Felipe Aguilar and Bradley Dredge among the later starters, Olesen set a clubhouse target of three under following a 70.
The precocious 24 year old, who did not drop a shot yesterday, endured an up and down round as four gains came amid a bogey and a disappointing double at 13.
But the manner in which he ground out a solid score bodes well for the weekend, even if he will likely find himself further down the leaderboard come Saturday.
"It was a bit easier today and I was not on top of my game," admitted Olesen. "I put myself in some awkward positions off the tee and I didn’t have decent control.
"I made it tricky for myself. It’s scoreable out there so I’ll probably have some catching up to do. I had hoped to shoot a few under today but I didn’t quite play well enough. I was fighting all the time."
Olesen, though, can at least take solace in knowing he will be roared on by vociferous home support.
"The crowds have been great," he added. "It’s like playing a major championship out there. ’ve never seen anything like it. It’s incredible and it really gave me a big boost out there. I just tried to keep going for them.
"I was grinding it out today and I managed to get it under par. It was a great feeling being in front of this crowd. It’s good fun. I can’t imagine what it is going to be like over the weekend."
English pair Garrick Porteous and Simon Wakefield were already threatening to snatch the clubhouse target having each found themselves three under through 16 holes.
Aguilar parred the opening hole, with Björn set to tee off at 1.10pm and Dredge an hour later.