Reigning world champion Pauline Ferrand-Prévot will miss the cyclocross season this winter due to an injury picked up in training.
She tweeted saying that she'd fractured her tibial plateau, which meant farewell to her chances of defending her title.
"Knee injury: fracture of the tibial plateau. Farewell to my cyclo-cross season".
Her Rabo-Liv team tweeted to confirm that she would be inactive for six weeks.
The team went on to wish her well in her recovery.
The rider was, for a time this year, world champion on the road, in cyclocross and in cross country mountain biking.
She was unable to defend her road title, which was taken by Lizzie Armitstead, and now looks unlikely to be in the running for victory at the 'cross worlds.
>>> Cyclocross bikes: a buyer’s guide (video)
Recovery will be her key aim as she looks beyond the cyclocross season to the 2016 road racing calendar.
Next season will see launch of the Women's WorldTour, and the young French rider will be among the top picks to do well in the headline races.
Rabo-Liv will also have Marianne Vos back in their squad after her 2015 season was abadoned due to a string of injury woes. The Dutch team will be even more competitive when back up to full strength.
>> If you're interested in Cyclocross take a look at our Adventure Cross series
Mark Cavendish spotted cycling in central London
Cavendish will race in the World Championships on Sunday 26 September, but needed to get some miles in his legs in London
By Ryan Dabbs •
See and be seen with the Garmin Varia rearview radar and tail light
Garmin’s clever tail light alerts you to approaching vehicles as well as upping your road presence
By Cycling Weekly •
10 of the best female riders under the age of 25
Pauline Ferrand-Prevot, Amy Pieters, Jolanda Neff and Elena Cecchini are just four of the young riders who have made an impression in 2015
By Stuart Clarke •
Marianne Vos scraps 2015 targets as injury woes continue
Former world champion Marianne Vos is still suffering from injury and has delayed her return to competition
By Owen Rogers •
Pauline Ferrand-Prevot wins women's Cyclo-Cross World Championship
Britain's Nikki Harris finishes fourth in the elite women's Cyclo-Cross World Championship in Tabor
By Nigel Wynn •
Marianne Vos gets descending tips from mountain biker Oscar Saiz
Marianne Vos, Pauline Ferrand-Prevot and their Rabo-Liv team hone their downhill skills in Spain
By Owen Rogers •
Pauline Ferrand-Prevot celebrates an 'unexpected' World Champs win
"I sprinted and I didn't look back" says the 22-year-old Pauline Ferrand-Prevot after taking the women's world title
By Gregor Brown •
Pauline Ferrand Prevot wins women's road race world title
Pauline Ferrand Prevot takes women's road race World Championships win as Lizzie Armitstead and Marianne Vos cancel each other out
By Stephen Puddicombe •