<P> The project broke ground on May 1, 2014, followed by the demolition of existing buildings, and excavation of an oval area for the arena . The final steel beam of the structure was placed on May 27, 2015 . </P> <P> In January 2016, T - Mobile US announced it had acquired the naming rights to the new arena in a multi-year contract . The arena held its grand opening on April 6, 2016 with a concert by Las Vegas natives The Killers, Shamir and Wayne Newton . Country music artists Martina McBride and Cam performed at a soft opening on March 31, 2016 . </P> <P> During its construction, T - Mobile Arena was pointed to as the home arena for a possible National Hockey League expansion team in Las Vegas . The expansion bid was approved and announced by the NHL on June 22, 2016; the new team, the Vegas Golden Knights, began play in the 2017--18 season . </P> <P> In March 2017, the Ultimate Fighting Championship (UFC) signed a seven - year agreement to become an official tenant of T - Mobile Arena . The agreement provides UFC with permanent retail space and signage, and requires the promotion to hold at least four events per year at the arena . </P>

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