There have been nine occasions in which one team swept either a foursomes or four-ball series and each time, the team that completed the sweep won or retained the Ryder Cup.
The fan lay on the ground after American golfer Brooks Koepka's opening shot at the sixth hole of the tournament veered off target and struck her just above the eye.
Finau chipped in for an eagle on the par-4 No. 6 to tie the match, but the Europeans were 2 up through 12. Sergio Garcia, one of the all-time Ryder Cup greats, justified his captain's pick, and Alex Noren didn't look much like a rookie, as the Europeans leaped out to a seven-hole lead by the turn.
The most controversial decision of the afternoon for the Americans was the pairing of Mickelson and DeChambeau, the latter of whom was making his Ryder Cup debut.
Ian Poulter and Rory McIlory, who was badly off form in the morning, came from 2-down to triumph 4 and 2 over Webb Simpson and Bubba Watson in a game that had the massive crowds finally roaring after they had little to shout about in the morning.
After Olesen and McIlroy both missed longer birdie putts, the Europeans conceded the hole to close out the four-ball match.
As expected, Finau was not in USA captain Jim Furyk's lineup for the afternoon foursomes (alternate shot) matches.
Coming off a victory at the Tour Championship, Tiger Woods lost in his first Ryder Cup appearance since 2012.
After a morning session in which the United States rolled to a 3-1 lead, Europe came storming back in the afternoon foursome sessions.
In a flawless world both Mickelson-DeChambeau and Simpson-Watson - who are 0-2-0 in foursomes play when teamed together compared to 2-0-0 as a fourball team - would have been better served in the morning format, but then that wasn't the plan. Rose found the water on his second shot; Rahm missed the green with his approach and his 20-foot par putt failed to drop. Fowler gave the Americans their first lead with a birdie on the 10th, and then Johnson birdied the next two holes for a 3-up lead.