Elias kicked off the final SmackDown of the decade with a song making fun of Bayley's & Mr. McMahon's haircuts as well as other references to things like the Rumble and Lashley's wedding. Once Elias was done, King Corbin, The Miz, and Daniel Bryan came out for the Triple Threat match and Corbin tried to establish his dominance by talking trash.At least this show doesn't have the Lana-Lashley wedding 🎶 - @IAmEliasWWE #SmackDown pic.twitter.com/CuSIrAzFlr— WWE on FOX (@WWEonFOX) December 28, 2019Roman Reigns' music hit during Corbin's smack-talking and Reigns ran in from the crowd, taking out Corbin before we headed for commercials. The Triple Threat was called off after the attack and the New Day came out instead after the commercials.Consider yourself lucky, King @BaronCorbinWWE...#TheBigDog @WWERomanReigns has PAYBACK on the brain! #SmackDown pic.twitter.com/Jy7ehmb9sW— WWE (@WWE) December 28, 2019The New Day & Braun Strowman vs. Shinsuke Nakamura, Cesaro & Sami ZaynBraun joined the New Day for a one-off matchCesaro and Big E kicked us off but the match devolved into chaos very early on. Nakamura & Zayn attacked Kingston after tags were made and Cesaro tackled him over the announce table.Kingston hit an SOS but Cesaro kept him from making the tag to Braun, Strowman was tagged in and he steamrolled through his opponents but Shinsuke caught him with a knee to the face.Strowman hit the power slam in the ring on Nakamura for the win after the New Day took out the rest of the heels on the outside.Result: The New Day & Braun Strowman def. Shinsuke Nakamura, Cesaro & Sami ZaynRun @SamiZayn, run! #SmackDown pic.twitter.com/J5ibuYJopw— WWE on FOX (@WWEonFOX) December 28, 2019Match rating: ARate this match here.The New Day wanted Braun to dance after the match and he did just that to the amusement of everyone present."I will never be able to unsee this." - @WWEGraves #SmackDown pic.twitter.com/7676hpuIN6— WWE on FOX (@WWEonFOX) December 28, 2019We learnt that Corbin was unwilling to compete after the attack earlier and the Triple Threat match was now a one-on-one between Bryan and Miz.BREAKING:King @BaronCorbinWWE is refusing to compete tonight, and it will now be @mikethemiz vs. @WWEDanielBryan to determine who will face @WWEBrayWyatt.#SmackDown pic.twitter.com/yKeiNcCOgA— WWE on FOX (@WWEonFOX) December 28, 2019Backstage, Mandy and Sonya DeVille were having a little disagreement before Otis handed Mandy a cake that his mother baked..@otiswwe's mama made @WWE_MandyRose her FAMOUS holiday fruitcake. #SmackDown pic.twitter.com/vdyxjT0or9— WWE (@WWE) December 28, 2019