He insisted saves like his first-half block from fellow countryman Aaron Ramsey come as a result of hard work on the training pitch.
"We train hard for those situations all week," he told the WBA website.
"Working with Dean Kiely and the other quality goalkeepers we have helps. When you're called upon on a matchday you should be prepared.
"You know you're going to have something to do when you play Arsenal.
"The Ramsey save was instinctive.
"It was an incredible defence-splitting pass and I was just in the right place at the right time.
"It was pleasing and it would have been criminal if we'd lost the game."
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