Central Florida has had two weeks to stew and think about its previous game - a home game the Knights lost straight-up to Tulsa as three-touchdown favorites. 
The ramifications of that stunning loss are two-fold: The Knights should come out extremely fired-up and ready. They also have discount value as the marketplace has knocked them down to being less than a field goal favorite. 
Central Florida is better than Memphis. But that loss to Tulsa hurt the Knights' prestige. They'll look to gain it back here against a foe they are 13-1 lifetime against with 13 straight victories. The teams didn't meet last year, but Central Florida beat the Tigers a combined four times during the 2017 and 2018 seasons. 
UCF has too much speed and skill position talent for the Tigers to handle. Knights sophomore QB Dillon Garbriel is one of the more underrated players in the country. Memphis is down from previous seasons because of coaching upheaval and lost talent. The Tigers don't have the defense to keep UCF in check, nor enough offense to keep up with the Knights. 
The Tigers' home field advantage is reduced, too, because only around 10,000 fans will be allowed into the 61,008-set Liberty Bowl due to COVID-19 restrictions.