Wolfsburg midfielder Maximilian Arnold believes their tentative start against Real Madrid in the Champions League on Tuesday ultimately led to their demise.
The Wolves held a significant advantage going into the deciding leg of the quarter-final encounter after beating Los Blancos 2-0 in Germany last week.
However, it did not take long for Real to get back on level terms, with Cristiano Ronaldo scoring twice within 20 minutes of kick-off before completing his hat-trick and securing the Primera Division side's progress into the semi-finals.
"It is bitterly disappointing considering the 2-0 lead from the first leg," Arnold told the club's official website.
"In the first 20 minutes we were far too cautious, but we got a grip on ourselves after that. Up front, we lacked the necessary luck."
Goalkeeper Diego Benaglio was also disappointed they were unable to hang onto their lead and believes the reaction of the Real Madrid players after the third goal went in proves exactly how close the German side had come to causing a major upset.
"When you see the relief at Real, it's fair to say, we were not far from causing a sensation," Benaglio said.
"We reacted well to falling 2-0 down and showed a good reaction to the first half after the break."