 Complete the following phrase:  On February 7, 2019, at the All Elite Wrestling Ticket Announcement held at the MGM Grand Pool Splash in Las Vegas, Nevada, Pentagón Jr. and Fénix made their first appearance with the company. As The Young Bucks were leaving the stage, The Lucha Brothers music played seeing the two teams face off before a brawl ensued with Pentagón striking Matt Jackson first, while Fénix took out Nick Jackson with a superkick. Pentagón then proceeded to hit Matt Jackson on the stage with a Fear Factor, before announcing themselves for AEWs inaugural event, 