Frank Lampard lamented Chelsea's wasted chances in the 2-2 draw with Valencia on Wednesday.
Both sides had opportunities to take all three points, but the spoils were eventually shared when Daniel Wass equalised for Los Che with eight minutes remaining.
"We nearly won it, nearly lost it. It was end to end, not that we wanted it to be," Lampard told BT Sport.
"It's difficult to come here, I know that from coming here as a player. When the atmosphere turns, sometimes you're hanging on, but it keeps it in our hands.
"Parts of our performance I'm not mad on. We gave away too many chances. We missed a lot as well. That's something we're doing a lot of at the minute - not putting our chances away.
"But can't turn away from fact they had a lot of chances. They were arriving in our box too much. Credit to the players for their work-rate and hanging on in there, but sometimes you have to be more secure than that."