ATo preflop - I have no idea

[btspider]

regardless of what you think he should do preflop, many of you are not considering the fact that this is 8-handed and he is closer to the button than a 10-handed UTG+1.

also, draws to pairs and backdoors do not have good implied odds. you are not going to war on the turn when you catch one pair.. nor will you usually get much action on the river when a one card straight is on board or the 3-flush is out there.

OP really needs to stop the action at his flop decision.