Swansea manager Michael Laudrup is taking nothing for granted ahead of the second leg of their Europa League play-off against Petrolul Ploiesti.
The Swans travel to the Stadionul Ilie Oana in Romania with a commanding 5-1 advantage after dominating the home leg, and sealing a place in the group stages of the competition should be a formality.
Captain Ashley Williams, record signing Wilfried Bony and Jonjo Shelvey have all been left in Wales for treatment on minor injuries, and Laudrup has warned his players to be wary of a backlash from the Romanian Cup holders.
"I have concerns, we will play against a team who have nothing to lose," said the Dane. "They had a huge result go against them last week, losing 5-1.
"So they can just go out and take chances, go forward and try to get an early goal. So we have to be ready from the first minute, that is for sure.
"For a club like us, we want to go on in European competition, into the group stage, so we know we have a job to do.
"Winning 5-1 was a huge result, but once in a while there are miracles and they can happen if you do not have the right attitude.
"But I am confident we will be competitive and try to win the game, not just on aggregate but on the night."
Club stalwart Leon Britton will take over the captain's armband from Williams for the game, and the 30-year-old said: "It is something I am very proud of.
"I was fortunate to lead the side out twice against Arsenal last season, but it will be great to lead the side out in European competition because it is new for the club and it means a lot to me."