I don't know if any Redskins fan can forget the last time the Skins played the Buccaneers in 2010, when two missed chip shot field goals and a botched snap on an extra point at the end of regulation gave the Buccaneers the win. This is despite Ryan Torain having a career day, and the Redskins winning the yardage, turnover and first down battles. Though payback would be nice this is a game that might not favor the Redskins as much as people think.
Yes the Buccaneers were 4-12 last season, and finished in the bottom third of most major statistical categories, but the Redskins also finished poorly in a number of statistical categories, and only managed one more win, despite an easier schedule. And while Raheem Morris will probably try to fire the team up against his former squad, I'm guessing new HC Greg Schiano doesn't want to lose to his predecessor's new team.
The history isn't in the Redskins favor either as Washington is just 9-10 all-time versus the Buccaneers, and that is despite winning their first four games against them. The Redskins are even worse when asked to go down to Tampa, as they have just a 4-7 mark. Furthermore rookie QB's generally do worse on the road (there are def. exceptions to this rule though), and this will be the Redskins 3rd road game in the first four weeks. That is a lot of pressure for a rookie QB, playing on the road three out of his first four weeks, and it will likely lead to increased mistakes.
As for the Buccaneers being a bunch of pushovers, I wouldn't count on it. Josh Freeman did regress some last year, but he still completed almost 63% of his passes. His issue was that of interceptions and yards after the catch, but both could be improved upon with the added protection of Carl Nicks and the deep threat ability of Vincent Jackson. Their running game could also give the Skins problems as they can now pair 1st round rookie Doug Martin, with power back LeGarrette Blount (not to mention they are running behind Nicks). The Bucs defense is still a question mark, but they've invested a ton of high picks the last few years into the area, and if they start paying off it could be a decent unit.
The Redskins are capable of winning this game without a doubt, but given their history in Tampa, unfavorable schedule, and track record with these kinds of games, this is one week that Redskins fans should be prepared to be disappointed.