Yahoo Sports reports: Donald Trump was loudly booed when he was shown on the video screens at Madison Square Garden on Monday night before Game 3 of the NBA finals between the San Antonio Spurs and New York Knicks. A few seconds later, the video board showed Knicks players in line and the boos turned to cheers. The US president, a longtime Knicks fan, attended as the guest of team owner James Dolan as New York hosted their first NBA finals game since 1999.