Inter Milan striker Lautaro Martinez blasted their performance after defeat at Champions League opponents Borussia Dortmund.
The visitors had been 2-0 up at half-time with goals from Martinez and Matias Vecino, but they were completely over-run after the break to lose 3-2.
Martinez snapped at the final whistle: "We have been weak and immature. It is impossible that what was created in the first half was forgotten.
"They did not give us an inch, it is sad because it was a great opportunity and we couldn't do much to bring home the points. I don't think it's an experience problem."
