Trump and thousands of other mixed martial arts fans watched on as American fighter Justin Gaethje beat Spanish-Georgian opponent Ilia Topuria to win the lightweight championship in the main event. The fight night - the first ever professional sporting event held at the presidential residence - was delayed by an hour amid fears of thunderstorms. Other administration officials were in attendance, along with UFC chief Dana White, Trump's longstanding friend. At one point in the evening, the crowd sang happy birthday to the president. An estimated 4,300 people were present for the invite-only event on the South Lawn - and another 85,000 were expected to watch at a nearby fan zone. The night opened with Trump walking from the White House to the arena alongside White. Military planes then flew overhead. A total of 14 fighters then competed in back-to-back fights, culminating in the main bout between Gaethje and Topuria. (BBC)