ATLANTA — On the verge of clinching their division before December, the Atlanta Falcons don't look so dominant when their longest, most intense rival is on the field with them. The New Orleans Saints have won four straight and 11 of 13 in the series, including a 31-27 home win over Atlanta on Nov. 11. It remains the only loss for the Falcons (10-1), who otherwise have dominated the NFC South race.