#3 Kevin Owen's return from injury on SmackDown
The return of Kevin Owens was unexpected. It happened in the midst of a contract signing between Daniel Bryan and Kofi Kingston for the WWE Championship. As per McMahon's order, Owens replaced Kingston as the #1 contender for Bryan's title at Fastlane.
It is a welcome move as Kingston's title coronation can be reserved for WrestleMania. Kevin Owens' return would definitely improve ratings. Most of his hardcore fans would have been waiting to watch the product when he comes back.
Now that Owens is back, it is unclear as to how long he would stay at the top of the mountain. Kofi Kingston's popularity is undeniable at the moment. He will get his rematch at WrestleMania, regardless of who wins at Fastlane. There is a huge probability for Bryan to win the match.
It will be interesting to see how KO is utilized after his big match at Fastlane. However, he will be a major fixture heading to WrestleMania.