Geraint Thomas's attempt at winning the 2017 Giro d'Italia could be over after he went down hard in a crash which looks to have been caused by a police motorcycle.
That belonged to the stationary police bike that was not parked far enough off the road and clipped the Dutchman, sending him into the peloton.
Team Sky's Thomas, second at the start of the day, finished over five minutes behind new race leader Quintana.
"I'm a bit angry at the minute and need to work out what to do tomorrow", said Thomas, who has dropped to 17th in the standings, 5:14 behind Quintana.
Quintana, the 2014 champion, attacked with Thibaut Pinot (FDJ) and Vincenzo Nibali (Bahrain-Merida) midway up the final climb before accelerating away by himself to take the stage and the leader's pink jersey.
Thomas lies 5 minutes 14 seconds behind new race leader and today's stage victor, Movistar's Nairo Quintana.
Although he battled on the climb to finish third at 24 seconds behind Quintana and move up to third overall, trailing the Colombian by 51 seconds, his race nearly ended too.
The Netherlands' Bauke Mollema of Trek-Segafredo is 51 seconds behind in fourth having finished in the same position today.
"That shouldn't happen. We were all racing to the bottom of the climb, and next thing I know someone hits a moto and we go down".
Jungels fell the 12th place in the general classification, while Pinot and Dumoulin were able to stay within half a minute of Quintana.
The Welshman revealed his shoulder had "popped out" but later added: "I've had worse crashes". "The whole team was strong and I was strong".
"There's still a long way to go in the Giro, we'll get to know in the coming days if the 30-second lead I have over Tom Dumoulin is much or little, but I feel good. That's the most important for now".
Nairoman, who has said he aims to win this year's Tour de France, the most prestigious cycling race of all, has shown the world and his rivals he is in excellent condition to do just that.
Thomas and Yates will have a rest day on Monday to consider their options, the British duo getting much-needed time to rest their tired and battered limbs ahead of stage 10 on Tuesday.