'I made a mistake': Pochettino takes blame but slams Spurs

Mauricio Pochettino took his share of the blame for "sloppy" Tottenham's 1-0 Champions League semi-final first leg defeat against Ajax after admitting he used the wrong tactics.

Pochettino's side made a dismal start as Donny van de Beek put Ajax ahead after just 15 minutes at the Tottenham Hotspur Stadium on Tuesday.

Ajax dominated the first half until Pochettino completely changed his game-plan by switching from a 3-5-2 formation to a 4-4-2 system.

Aided by the introduction of Moussa Sissoko for the injured Jan Vertonghen, Tottenham regained a measure of control without ever hurting Ajax with their long-ball barrage.

Pochettino conceded he had blundered with his game-plan, but the Tottenham manager was also angry with the lethargic way his players started the club's first European Cup semi-final for 57 years.

"Watching now of course I can accept it was a mistake the shape we used. But there were not too many options," Pochettino told BT Sport.

"I am not happy. But our lack of energy .