Robbie Keane and Paul Robinson have lamented referee Alain Hamer's decision to award Sevilla a penalty in Tottenham's 2-1 Uefa Cup defeat on Thursday.
Keane fired Spurs ahead after just one minute at the Estadio Ramon Sanchez Pizjuan, but the game changed when Robinson was adjudged to have fouled Adriano Correia after 19 minutes.
Fredi Kanoute tucked away the spot-kick and Alexander Kerzhakov headed home after 35 minutes to give Sevilla a lead ahead of next week's return leg.
But Keane felt Sevilla were lucky to get the penalty as replays showed Robinson had taken the ball rather than Adriano's legs.
However, the Irishman remains confident that Tottenham can overturn their deficit at home to book a place in the semi-finals.
"We're obviously delighted to get the away goal. We started off very well and were running the game and then unfortunately someone gave a bad decision," Keane told Sky Sports News.
"We could see on the pitch it was never a penalty. There's no way the ball could go towards their goal if it was a penalty.
"The lads are obviously devastated about that but the away goal is very important and we look forward to taking them back to White Hart Lane.
"They are a good side and their league form suggests that, but we're fairly confident we can take them back to the Lane and get a result."
Robinson also believes the game could have panned out differently if the penalty had not been given.
"It was a point in the game when we were doing well. We scored early and it gave them a leg-up into the game," he explained.
"We knew it would be difficult for us and at the end of the day 2-1 is not a disaster, but it could have been a lot better."