Min Woo Lee is going to get some seriously high-powered support from his major-winning sister Minjee Lee at Hoylake this weekend - but he says he'll have to raise his game if he's to join her exclusive club.
Minjee, who's already won two women's majors by the age of 27 - the Evian Championship in France in 2021 and the US Open last year - is in England preparing for her own assault on the Open Championship at Walton Heath in August.
And her 24-year-old younger sibling revealed she would be coming to Hoylake over the weekend to watch the climax to the 151st men's Championships, evidently hoping little brother will be in contention.
Lee noted on Tuesday that no brother and sister had ever both won major titles, so he has a shot at helping them rewrite golfing history.
Not that he sounds entirely convinced it's on the cards.
The 24-year-old from Perth may be recognised as one of the most gifted young players in the game but he is still yet to put all those skills together in one spectacular week at a major Championship.
But of his eight majors so far, the encouragement for Lee was his recent joint-5th place finish at the Los Angeles Country Club in the US Open was his best, his first top-10 finish.
Talking at the driving range at Royal Liverpool, Lee revealed: "Minjee's actually going to come here at the weekend and watch. It's never happened before that a brother and sister have both won majors - but I've got to lift my game!"
Lee wasn't overly excitedly by his latest warm-up performance at the Scottish Open at North Berwick - the event where he earned his biggest victory in 2021 - where he tied for 35th.
Lee has such an array of different shots, he professes to love the challenges that links golf throws at him and his Scottish victory shows he has the armoury to have a big week at Hoylake.
"I love it because you can hit a lot of different type of shots and that's what I really like. It's a playmaker's course and you've got to plot your way around but it's different, it's fun."
On a wet and windy Tuesday, Lee revealed that the previous day, he had only once used the driver on the outward nine, desperate to keep away from the course's notorious pot bunkers.
"Tiger (Woods) showed us that in 2006. It's a course that you need patience on, not one you can overpower," said the man who unleashed a 407 yards monster at the Los Angeles Country Club.