Becky Lynch's black and yellow ring attire was influenced by the titular character's ring gear in 2006's 'Rocky Balboa'. One of her favorite movie characters, when growing up.
The Shield's match was advertised as their last match as a team.
The WWE Championship match between Daniel Bryan and Kevin Owens became a triple threat when Mustafa Ali was added at the last second, having recovered from the injuries that kept him out of the Elimination Chamber match on the previous PPV. Before this match took place, Mr. McMahon had seemed to placate Kofi Kingston by mentioning the match was now a triple threat and for him to "get out there"...only for the Championship match to be for later on, and for Kofi's match to be a handicap match against Sheamus and Cesaro, which he would lose.
During the triple threat match for the WWE Championship, the WWE Universe initially booed the fact Mustafa Ali was in the match and not Kofi Kingston, and was initially chanting "WE WANT KOFI!" as the match started. All three competitors (especially Ali) turned in such a spectacular performance that, in a rarity, they won the crowd back over.
This is the last Fastlane PPV in the chronology until 2021. The Fastlane PPV was invented as a replacement for the Elimination Chamber when the chronology of that PPV was initially retired due to the original EC structure being unable to be accommodated in the more modern arenas. (There was a one-off EC event in 2015 held in May at American Bank Center in Corpus Christi, TX, but none in 2016.) However, the Fastlane PPVs haven't gone over well with the crowds or critics (and even more so after the Elimination Chamber PPVs were resumed in 2017 with a new lighter, more square EC structure), usually because by the time the PPV is held, the WrestleMania card is already set and/or the PPV holds matches that are nothing more than a formality as the winners are already predicted before the match actually begins. ("Pro Wrestling Torch Newsletter" writer Benjamin Tucker likened the first Fastlane in 2015 as "a glorified Raw episode".)