Goals from Pierre-Emerick Aubameyang (2), Alexandre Lacazette (1) and Lucas Torreira (1) ensured victory for the Gunners at Emirates as goals from Eric Dier and Harry Kane was not enough to get a point for Spurs.
Pochettino said that Spurs were defeated by Unai Emery’s side because his players lacked the ‘energy’ to compete against the hosts.
“It was a very competitive game, very tough for us because of the fixtures,” Teamtalk quoted Pochettino as saying at post-match.
“We were talking before about it being after Chelsea and Inter (Milan), so it’s difficult.
“I think Arsenal competed with a lot of energy but the game was even until 2-2 in the second half. When we conceded the third goal it was tough for the team to come back and make the effort again.
“When we conceded the fourth and then of course with the sending off the game was over.”
Tottenham’s next feature is against Southampton on Wednesday night in the Premier League.
