The Saints travel to Glasgow to meet the reigning champions at Celtic Park and Wright is going in with a positive mindset despite the fact he knows Neil Lennon has a much stronger group of players at his disposal.
The Hoops were impressive despite losing 2-0 to AC Milan in the Champions League on Wednesday night and Wright is well aware of their quality.
"I thought Celtic were really unlucky," said Wright at the pre-match media conference. "They were the better team over there.
"Their squad has grown with the experiences they have had in Europe and it was an excellent performance. They certainly did not deserve to lose and probably deserved to win.
"But we have been to Celtic Park before and got a couple of good results. We've had a few tankings as well down there and that can happen.
"But we can use our own experiences from Europe of going away to a place like Rosenborg and getting a result. We know the underdog can often cause an upset.
"We respect Celtic and know they are the best side in the country. We know Neil can change four or five positions without even weakening it. It will be a difficult game but they players like to test themselves against the best."