Geraint Thomas and Tao Geoghegan Hart saw their medal hopes hit by a crash in the men’s cycling road race on day one of the Tokyo Olympics.
Just as in the Rio Olympics five years ago, Thomas came off his bike as he was caught up in a crash, along with fellow Team GB star Hart.
Both were quickly back on their bikes as they looked to battle their way back to the peloton.
But it was a blow for both, with Thomas having also suffered disappointment in this year’s Tour de France after dislocating his shoulder on stage three of the race.
Team GB stars Heather Watson and Seonaid McIntosh suffered disappointment on day one in Tokyo, as China won the first gold medal of the Games.
Former shooting world champion McIntosh missed out on a place in the 10m air rifle final, which was won by 21-year-old Yang Qian, who took gold with a new Olympic record score of 251.8.
McIntosh will have another chance to medal in next week’s 3 Positions competition.
The 25-year-old said: “I’m just lowering expectations. It’s not my best event. It will go wherever it goes. And if people want to try and keep pressure on me, they can.
“But it’s my choice whether or not to feel that pressure and or whether or not to keep it on myself. So I just go keep a level head.”
Tennis star Watson crashed out of the women’s singles tennis competition in the first round, losing 7-6 6-3 to Germany’s Anna-Lena Friedsam.
But there was better news for Andy Murray and Joe Salisbury, as they eased past French second seeds Pierre-Hugues Herbert and Nicolas Mahut 6-3 6-2 in the opening round of the men’s doubles.
In the rowing, with Helen Glover and Polly Swann finished third in the women’s pairs to secure a place in Tuesday’s semi-final.