The trio posed for photos with players and wives on each team during the opening ceremony on Thursday.
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Each former president also wore their Presidents Cup polos to the event.
Meanwhile, President Donald Trump, who equally loves golf, had his hands busy with the 70th anniversary of the National Security Council, which took place in Washington, DC.
A packed crowd in the grandstands, surrounding the first tee, warmly greeted Obama, Bush and Clinton, all whom are keen golfers, who entered via a tunnel and took their seats to the right of the first tee.
American veteran Phil Mickelson then stole the show by walking over and shaking hands with the three former presidents and taking a selfie.
South African Charl Schwartzel had the honor of hitting the first shot in the opening foursomes match, in which he partnered Japan’s Hideki Matsuyama against Americans Justin Thomas and Rickie Fowler.
A group of about 40 International ‘fanatics’ — mainly Australians and South Africans supporting the visiting team — mischievously chanted: ‘Justin, you’ve got two first names, Justin you’ve got two first names’ as Thomas stood on the tee.