This is the first WWE PPV to feature matches where the Tag Team Champions team together to defend their titles in one match, then both members of that same team face each other for the singles title held by one of them.
The storyline between Kofi Kingston and Randy Orton where Orton keeps referring to Kofi as "stupid" stems from a match they had years earlier. In that match, Orton was supposed to use The Punt on Kofi's head, but Kofi ended up getting up beforehand. At that, Orton gave Kofi an RKO, then legitimately called him "stupid" for that move.
Alexa Bliss came awfully close to not only being the first active female superstar to win the WWE 24/7 Championship, but the first superstar to win a championship title while in the middle of a match for a different championship.
When Sasha Banks was thrown back into the ring area from the crowd, a male fan tried to touch her backside. When Banks was alerted to this via social media, she threatened legal action against the fan.