A disconsolate Mike Smith watched the chip-shot field goal sail through the uprights, then walked slowly across the field, his head down, to shake hands with the other coach. Smith knew this loss was on him. John Kasay kicked a 26-yard field goal in overtime after the Atlanta coach decided to go for it on fourth down deep in his own territory Sunday, a decision that backfired horribly and handed the New Orleans Saints a 26-23 victory over the Falcons.