The Gunners enter the last day of the season a point ahead of Tottenham and two above Newcastle, with three points guaranteeing third.
The French coach will know that if his men lose at the Hawthorns they could slip to fifth and out of the Champions League qualification places, but he feels his side are good enough to finish the job.
“I feel we are focused, switched on and I’m confident we’ll do well,” Wenger told reporters published in The Guardian.
“For us it is just to find the right mixture – to be focused, combative and relaxed, and especially be faithful to play our football like we want to. At the end of the day it will be down to playing well, no matter what is at stake.
“We have known final days like this before, games where we’ve been playing for titles, or to qualify for the Champions League. We are used to coping with that. It’s a fantastic opportunity for us, and one we want to take.
“If we have more of the ball than West Brom, like we want to have, we will have more chances to win the game. That is what we will focus on. Just be faithful to the way we want to play football,” he concluded.
By Gareth McKnight