Everton's new stadium at Bramley-Moore Dock welcomed 10 000 fans for a test event featuring an under-18 friendly match against Wigan Athletic as the Premier League club prepare to say goodbye to Goodison Park at the end of this season.
Construction of the new 52 888-seater arena took four years and cost close to 800 million pounds ($1.01 billion), according to British media reports, and is also set to host matches at Euro 2028.
"Whoever's designed it has done a fantastic job because the stands are on top of you," Everton under-18 coach Keith Southern told Everton TV.
"When this is full next season, it's going to be a hell of a place to play."
Wigan's Harrison Rimmer became the first to score at the Everton Stadium in the 12th minute. Everton lost 2-1 with Ray Robert scoring for the hosts.
Goodison Park, Everton's home since 1892, hosted its final derby on Wednesday as David Moyes's side held leaders Liverpool to a 2-2 draw. The stadium's last competitive game will take place on May 18 when Everton host Southampton.
The stadium will then be demolished with the land set to be redeveloped into a mixed-use scheme with housing and offices.