A "perfect bracket" refers to correctly predicting the outcome of every game in a sports tournament. It means that all of your bets or guesses about which teams will win or lose are correct. Full definition
There's not a single perfect bracket in the country, but we wanted to know the real probability of boasting a flawless bracket. (sportsinsights.com)
Others will fill out dozens of brackets in a hopeless quest for that elusive perfect bracket. (sportsinsights.com)
There was a single perfect bracket remaining after Stephen F. Austin upset over VCU, and unfortunately it's not entered in Warren Buffet's $ 1 Billion Dollar Challenge. (diehardsport.com)