as indicated in the other posting, the youngest player 攻擂 from Position 14th and upward, not likely for him to move up too many levels (out of 13 levels) if any.
By the way, from the results, if 擂台主 and the youngest player (攻擂) both are placed in Group C before the start of Phase 1, then we are likely to complete all games in Phase 2 and do not need to have Phase 3. Phase 3 is to take care of too low or too high in the grouping(s) early, it is a good control.