[tigerite]

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I'm interested: why not call the raise with A7s preflop?

my reasoning was as follows, I have position, the raise was a small portion of my stack, it is a hand that could improve to the nuts, and I could win a big pot or double up with it if it hits. Original raiser and caller could have pocket pairs or AK-AJ KQ, and I am not playing A7s for high card value.

Thanks,
Mike

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Because the vast majority of the time you won't flop trips, but either A high or a flush draw. If you can really get away from the A high flop and not fold incorrectly to QQ or whatever, then you are still going to have to make money from when you flop a draw, and because it's been raised preflop, the others will almost certainly give you incorrect odds (and yes, call your re-raise/push/whatever) to continue with the hand. That is why, you fold preflop.