I think Ravens should take a dive here.
Gruden is sly, he will tank this season. Raiders won't get many wins this season, but they will be awarded a win here, because it's the first game of the new stadium.
NFL will let Raiders win. It's how they do business. Usually first game of a new stadium, they want to make fans happy and sell tickets for the season and they rig it for the home team to win. Raiders won't lose and shit on the home fans here.
Last year similar spot for Raiders opening home game they were home underdogs on MNF and won vs Saints.
If I remember correctly, the last 3 most recent new NFL opening stadiums with first season game:
1. SoFi Stadium - Rams win and cover last night
2. Mercedez Bank Stadium - Falcons beat Packers
3. US Bank Stadium - Vikings (w/ Sam Bradford) beat Packers