West Ham manager Slaven Bilic admitted his side had been outclassed as they fell to a 4-0 Premier League defeat against Manchester United.
Romelu Lukaku immediately started to pay off his £75million transfer fee with two goals against the Hammers at Old Trafford on Sunday.
Bilic's side were completely outplayed, and could easily have trailed by more goals before substitute Anthony Martial and Paul Pogba finally put a more realistic slant on the scoreline in the closing minutes.
Bilic - who handed debuts to summer signings Javier Hernandez, Joe Hart, Marko Arnautovic and Pablo Zabaleta - was left disappointed by the manner of the defeat.
"I expected more of course, but I have to admit they were a much better side in every aspect of the game," he told reporters at Old Trafford.
"We knew they had a strong side of course, but I expected us to do much better.
"We started okay but then it was missing, we were much slower than them.
"It's very hard to find any positives now when you lose 4-0."
Additional reporting by the Press Association.
