The WorldTour calendar concludes with the hilly Il Lombardia monument race, which caps off a series of one-day Italian races.
Bob Stapleton, who serves on the USA Cycling board and the UCI's management committee, wants the playing field leveled.
Alexander Kristoff finished a close second to Peter Sagan in Sunday's elite men's road race.
The 2017 world championship on Sunday once again suits classics riders with a sprint, but the weather may play a factor.
Peter Sagan will attempt to win an unprecedented third straight world road race title this weekend.
Sunweb makes history winning gold in the men's and women's team time trials at UCI world championships in Norway.
The Italian will race Il Lombardia and a handful of other one-day races to close out his season.
The riders started the Vuelta not knowing if the team would exist in 2018.
The 26-year-old Dutchman was third in the Vuelta entering Friday's stage 19, 12 seconds ahead of his closest competitor.
Vincenzo Nibali was nearly 2 minutes behind race leader Chris Froome entering Wednesday's stage 17, but he's hopeful he can close the gap.