Inter Milan defender Milan Skriniar says they weren't up to standards for their 1-1 draw with Champions League opponents Slavia Prague.
The Nerazzurri had been trailing 1-0 and were fortunate not to concede more, but Nicolò Barella volleyed in from a corner in stoppages to equalise.
“They are a very physical side and if we had played from the start the way we did in the final minutes, I think it would've been a very different game," Skriniar told Sky Sport Italia.
“We weren't very concentrated and fell asleep, it's not good enough. The first match is always the most important, but we have another five to go in this group and have absolutely got to put in more grit and character. This just isn't good enough.
“We struggled to create chances. I don't know where the problem was, but we need to analyse this match and discover clearly where to intervene, because it's unacceptable to play the Champions League opener like this."