Part of the Broncos historically being tough at home is their edge playing at Mile High Stadium. But only 5,700 fans will be allowed to attend, which is 7.5 percent capacity. 
So the Broncos' home field advantage is reduced. That makes the Buccaneers even more attractive because matchup-wise they should dominate. 
Denver's defense is down due to injuries to Von Miller and cornerback A.J. Bouye. The Broncos have just two sacks on 86 dropbacks having faced Ryan Tannehill and Ben Roethlisberger. Tom Brady has better weapons than those two quarterbacks especially with Chris Godwin back healthy and Leonard Fournette giving Tampa Bay its best running back in several years. 
The Broncos did not do a good job in backing up Drew Lock, who is out with a rotator cuff strain. Jeff Driskel is a career backup and not a very good one. He's inaccurate and takes too many sacks. Denver also is without its best wideout, Courtland Sutton, and all-purpose back, Phillip Lindsay. The Buccaneers have a stout defense. They led the NFL in rush defense last season and have the pass rushers to take full advantage of Driskel's inadequacies.