• World No4 misses second weekend of tournament play in a row • Padraig Harrington leads the way at Dundonald on nine under par

Rory McIlroy’s Open Championship preparation suffered its latest blow after he missed the cut at the Scottish Open. Friday’s struggles in the second round mean the Northern Irishman has failed to survive for back-to-back tournament weekends. His next start is the third major of the year, the Open, at Royal Birkdale from Thursday.

McIlroy was already under pressure in Scotland after a first round of two-over 74. When producing three birdies inside seven holes on Friday, his third-round place seemed secure. Yet the 28-year-old double-bogeyed the 13th for the second day in succession and his 71 meant a plus-one total and an early exit.

Padraig Harrington, meanwhile, appears to have summoned the spirit of Birkdale. With days to go to the Open, at the location where he retained the Claret Jug in 2008, he marched out to nine under par with a second round of 68. “Anything that comes my way from here would be a bonus,” he said. “I will win tournaments, that’s for sure, but I’m not turning up trying to change my legacy.”

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The Irishman’s Scottish prominence is nonetheless partly remarkable. Having undergone surgery on a neck problem in March, he subsequently feared for his career after a freak incident involving an amateur to whom he was giving a lesson. The said amateur struck Harrington’s elbow during his swing. The three-times major champion duly recovered from that injury but he remains lightly raced owing to back-to-back fitness problems.

Adam Scott is four under after a second round of 71. Matt Kuchar is two strokes better off after adding a 70 to Thursday’s 68. “The course is very playable if you’re hitting the ball well,” he said. “But it also can beat you up. Those pot bunkers are kind of out there to gobble up some wayward drives, and there’s enough of the rough to be troublesome.” David Horsey’s five-under aggregate was due in no small part to a hole in one at the 11th.

Darren Clarke withdrew before hitting a ball after feeling discomfort in a knee during a morning range session. The 2011 Open champion is, however, fully expected to tee up at Birkdale.

The tournament sponsor, meanwhile, has publicly backed off from the idea of Donald Trump’s course on the outskirts of Aberdeen hosting the 2019 Scottish Open by admitting “politics” would be problematic.

Martin Gilbert, Aberdeen Asset Management’s chief executive and a friend of the US president, is known to have been very keen to host the event at Trump International Golf links but the European Tour is much less comfortable about such a scenario.

“Trump, I don’t need to tell you, is a great golf course but there are issues if we went there,” Gilbert said. “No decision has been made but look, there are clear issues, shall we say. Politics aside, Trump would be an ideal venue but you can’t put politics aside. That is the issue so we will wait and see.”

Despite a series of European Tour fact-finding visits to Trump International, Cruden Bay has now emerged as an alternative site.