NEW ORLEANS — Proud veterans Drew Brees and Ben Watson summoned their best performances of the season and restored a bit of swagger to the recently reeling Saints. Brees passed for 312 yards, Watson racked up a career-high 127 yards receiving to go with a fourth-down touchdown catch, and New Orleans handed the Atlanta Falcons their first loss of the season with a 31-21 win on Thursday night. Desperate for a victory, the Saints (2-4) enjoyed big plays in all phases, a common occurrence when New Orleans hosts night games.