The 2020 Ryder Cup has been postponed for 12 months.
The biennial match between the United States and Europe was scheduled to take place at Whistling Straits in Wisconsin from September 25, but organisers have decided they did not want to stage the event without fans in the current coronavirus climate.
It means the competition will now take place in 2021 and every two years thereafter, meaning Rome's turn to host will now come in 2023.
"It became clear that as of today, our medical experts and the public authorities in Wisconsin could not give us certainty that conducting an event responsibly with thousands of spectators in September would be possible," said PGA of America chief executive Seth Waugh.
"Given that uncertainty, we knew rescheduling was the right call. As disappointing as this is, our mandate to do all we can to safeguard public health is what matters most.
"The spectators who support both the US and European sides are what make the Ryder Cup such a unique and compelling event and playing without them was not a realistic option."
Guy Kinnings, Europe's Ryder Cup director, added: "The Ryder Cup is rightly celebrated as one of the world's greatest sporting occasions, made special and totally unique in our sport by the fervent atmosphere created by the passionate spectators of both sides.
"While that point is significant, it is not as important as the health of the spectators which, in these difficult times, is always the main consideration.
"We considered all options including playing with a limited attendance but all our stakeholders agreed this would dilute the magic of this great occasion."