Tottenham striker Harry Kane says defeat at Europa Conference League rivals NS Mura was "unacceptable".
Kane skippered Antonio Conte's side in Slovenia and after equalising in the second-half, Spurs look to have managed at least a point before an inexplicable last-minute collapse.
But Mura forward Amadej Marosa's winner with the last kick of the game concluded a dreadful evening for Spurs.
"Unacceptable really - didn't start well going a goal behind, going down to 10 men made it difficult for ourselves," Kane told BT Sport after the game.
"Second-half we showed some fight and spirit, got ourselves back into the game and if anyone looked like scoring it was gonna be us, but then an immature mistake at the end to concede a goal.
"We had all the play, but yeah it's unacceptable. But yeah a tough night for us and we have to learn from it... we just didn't get the job done, these nights away from home can be difficult if you don't get it right and that was the case today.
"We was calm, we needed to up our game and we did that, but it wasn't enough, they scored in the last second of the game and yeah it hurts.
"It's our responsibility as players on the pitch to go out and win the game and we didn't do that today Full credit to them, we have stuff to learn from, but we have to dust ourselves down."
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!