Hey, BR, sorry for hijacking your thread...
What number does each rider wear?
Unlike most sports, riders don't have a number they wear all the time, instead it changes from races to race, so I can't really tell you. However, Pogacar will wear number 1 as the defending champion. The "main man" on each team usually gets the number ending in '1' (11, 21, 31, and so on)
How many riders are there on each team?
Eight riders. Used to be nine until a few years ago.
So, what happens if a rider has to drop out of the race? Can his team get a replacement?
No replacements! Some races have seen teams finish with just one rider.