Bacary Sagna has revealed he was due to take Arsenal's fifth penalty in their shoot-out victory over Wigan Athletic in the FA Cup semi-finals last month.
Santi Cazorla's decisive spot-kick, combined with the heroics of Lukasz Fabianski, helped the Gunners reach their first FA Cup final since 2005.
The France defender practised from 12 yards in the build-up to the game but says he was more focused on his team-mates' penalties than his own.
"I knew if [Santi] scored we would go through," Sagna told Arsenal Player. "I wanted him to score so much so I was not thinking about all the pressure I would have had.
"It was the one to score and he did because he's a great player and he stayed calm because he wanted to send Arsenal to the final.
"Sometimes we take some at training, sometimes I stay a bit more at training and I take some. Just for fun but as well because we know it can happen during the game or in the penalty shoot-out. I always train to be as good as possible.
"You just need to have a choice and find the the right choice and keep it until the end no matter what happens, no matter where the keeper is. You just need to select the right option and keep it until the end."
Sagna is set to take part in his second Wembley final for the club when they meet Hull City on Saturday and the 31-year-old is desperate to claim some silverware for the fans.
"I just want to win the trophy because we didn't win for a long time," he said. "For the players and for the club it will be something great, we have the possibility to do it and we want to do it.
"They [the fans] deserve to celebrate with us, they deserve to see we're fighting for them. They deserve to be happy because they always supported us throughout these years and I always notice Emirates Stadium full even when we had the bad times here to support us.
"We want to give something back."