Tottenham boss Mauricio Pochettino has no regrets about making seven changes to his side, despite a 3-0 defeat by Borussia Dortmund in the first leg of their Europa League last-16 tie.
Pochettino, whose side is also bidding to win the Premier League title, left striker Harry Kane on the bench.
“I am very disappointed with the result. It was a bad day in the office but we need to accept that,” he said.
“I have no regrets. We picked the starting XI to try and win the game.”
A Pierre-Emerick Aubameyang header and two Marco Reus goals left Spurs with it all to do in the return leg at White Hart Lane on 17 March.
Through the good times and the bad
Tottenham are now winless in three matches following a 1-0 defeat at West Ham and a 2-2 daw with Arsenal at the weekend.
They travel to Premier League bottom club Aston Villa on Sunday looking to close the gap on leaders Leicester, who are five points clear at the top.
“I am not worried, I know the circumstances,” Pochettino added.
“We need to accept some periods during 10 months that we will have good and bad times.
“We have always had things good, it has only been in the last few games not so much. The players are very sad but we have to take the positives.”
Dortmund are unbeaten in 2016 and were in control throughout Thursday’s game as Tottenham struggled to cope with the German side’s swift and incisive attack.
Despite the defeat, Pochettino is confident his players will benefit from the experience.
“We were disappointed, but it was a very good test for us to compare to their level,” he said.
“It was good for us to feel what a game in the Champions League feels like.”