Luke Donald believes a Ryder Cup held without spectators could give Europe the edge over the United States.
The biennial contest is due to take place at Whistling Straights in Wisconsin from September 25-27 this year.
Golf has largely been at a standstill during the coronavirus pandemic, but the PGA Tour plans to resume its calendar from June 11, although events are almost certain to be behind closed doors.
If the Ryder Cup can go ahead as planned but spectators are unable to attend, Europe vice-captain Donald thinks it could prove to be a disadvantage to the hosts.
Asked if playing without fans present could benefit Europe, former world number one Donald told the Sky Sports Golf podcast: "It certainly could.
"Obviously, for anyone who watched the exhibition match [involving Tiger Woods, Phil Mickelson, Peyton Manning and Tom Brady] last weekend and saw some live golf, there were only four players and there wasn't much energy there.
"I think players feed off the energy, especially the home team. They feed off that positive vibe and the crowd can play a big part, that's why it's always an advantage to be at home.
"If we were to play a Ryder Cup without any fans, then being in America it would be more favourable to the Europeans than the US team."