There is this question that is seriously bordering me if the us version and that leg there is a head to head what happens if a team decided to quit the RB or a detour what happens if they won their first head to head do they serve it right in the spot or the start of the next leg?
Clarifying, do you mean, "what if a team quits a task prior to the head-to-head duel?" If so....
The team would serve the penalty after arriving at the Pit Stop since they would be ahead of another team if they did win a head-to-head. Plus, if it was an on-site penalty for a major task that has a 4 and 6 hour wait-out time, I doubt the producers would allow for the second-to-last place team to wait hours on end too for that penalized team.
Yes. In TARCan 3 Kristin was injured during the roadblock in Leg 5. As she was unable to play, she took a penalty at the face off (head-to-head, double battle, whatever you may) and that prompted Simi & Ope to also take a penalty. What Simi & Ope didn't realize was that there was still a team trailing behind - Nic & Sabrina. So when Nic & Sabrina finally arrived but since there was nobody left for them to go against, they got the clue
without performing the face off and without receiving a penalty. Nic & Sabrina received penalties for the detour later on (it was too dark for them to perform it) so Nic & Sabrina checked in dead last but placed 6th because of Simi & Ope and Neil & Kristin. To their weird luck, the leg was also a KOR.
And by the way, this was TARCan's first try out with the face off.