Saints quarterback Drew Brees has been diagnosed with a torn ligament near the thumb of his throwing hand that is expected to sideline him at least six weeks, said a person familiar with the situation.
Brees has elected to have surgery, but it was not yet clear when the operation would take place or who will perform it, the person said. The person spoke to The Associated Press on condition of anonymity Monday because the diagnosis had not been announced.
The reported time frame means the veteran quarterback would miss New Orleans' game against the Cowboys on NBC's Sunday Night Football Sept. 29.
Brees left Sunday's game against the Los Angeles Rams in the first quarter after the thumb on his right hand hit the hand of on-rushing Rams defensive lineman Aaron Donald on the follow through of a throw.
The Saints lost the game 27-9, with backup Teddy Bridgewater going 17-for-30 for 165 yards during the last three quarters and change.
Brees has missed only one full game because of an injury in his previous 13 seasons with New Orleans. The Saints narrowly lost that game, with Luke McCown at quarterback, at Carolina during the 2015 season.
Brees is the NFL's all-time leader in completions with 6,621 and yards passing with 74,845. His 522 touchdowns tie him for second all-time with New England's Tom Brady, 17 behind retired former Indianapolis Colts and Denver Broncos quarterback Peyton Manning.
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The Saints are practicing this week in the Seattle area before they play the Seahawks on Sunday. New Orleans' five games after that are against Dallas, Tampa Bay, Jacksonville, Chicago and Arizona, followed by a Week 9 bye.
Bridgewater, who returned this season on a one-year, free-agent deal, is the primary backup. Taysom Hill, who plays a variety of skill positions on offense and also plays on special teams, is the third-string QB. It remains to be seen how his playing time at various positions will be affected if he is elevated to second-string QB while Brees is out.
At 1-1, the Saints are tied for first place in the NFC South. They entered the season with high expectations after advancing to the NFC title game last season, losing to the Rams in a game marred by officials' non-call of pass interference and helmet-to-helmet contact fouls committed by a Rams defensive back Nickell Robey-Coleman against then Saints receiver Tommylee Lewis.