The last bracketed tournament we have had was the Eryops tournament (10/14/19). If you have never experienced a bracketed tournament before, they are setup different from our standard tournaments.
Depending on your park level, you will be placed in one of several brackets. Most bracketed tournaments have three brackets (12-29, 30-49, and 50+). There have been some that have been divided into two brackets (sometimes 12-24/25+; other times 12-49/50+). If you are at the bottom of your bracket, expect it to be brutal. A word of caution if you are in the highest bracket, expect the tournament to require teams you would normally use in Predator League to get wins in Hatchling for very few trophies. Once you get to Dominator League, the tournament behaves in a normal manner except you typically get 40 trophies for every victory.