"I think your experiences help you," Smith said. "For me, it's more about when you're in the batter's box and how you feel, the batter's eye and the pitchers. There's no need worrying about the fences and the dimensions or how the ball flies.
"If you hit it, it's going to go. If not, it won't."
Of course, Smith spent the last two seasons playing for the A's and in their spacious ballpark.
Smith played four seasons at Coors Field with the Rockies before joining the A's. One of the things that general manager Josh Byrnes liked about Smith before he traded for him in November was the fact he played in Oakland's pitcher-friendly O.co Coliseum and wouldn't be put off by Petco Park's dimensions.