Despite the WWE presenting professional wrestling with pre-determined matches, there is still betting allowed on the event and the odds the day of a major event are almost always accurate when predicting winners and losers. In the case of Fastlane, Odds Shark reports that Braun Strowman has monster odds to beat Roman Reigns at -2,500. What this means is that a person will have to bet $2,500 to win $1. On the other hand, a person can bet just $1 to win $900 if they bet on Roman Reigns to win.
This means that, if the oddsmakers are correct, Roman Reigns will lose the match against Braun Strowman at Fastlane. Now, there are a couple of things to keep in mind when seeing these odds. A loss could be by disqualification or count out and does not have to be a pinfall loss.