1:26 p.m.

Andrew Luck is getting off to a bit of a rocky start in his return for the Indianapolis Colts.

After receiving a loud ovation during introductions, Luck made it onto the field for his first regular-season series in more than 20 months at the Bengals 7.

It didn't last long.

Following a first-down run, rookie guard Quenton Nelson was called for a hold. On second-and-14 from the Bengals 14, Luck was picked off by linebacker Preston Brown on his first official pass since returning from shoulder surgery.

It got worse. Cincinnati Bengals safety Shawn Williams has been ejected after making a helmet to helmet hit on Luck. The Colts quarterback ran for 7 yards before being hit in the head by Williams while being tackled.

Luck did not leave the game.

— AP Sports Writer Michael Marot reporting from Indianapolis.

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1:05 p.m.

The Ravens and Bills kicked off a new season on a wet field.

It's been raining in the Baltimore area all weekend, at times heavily. Throw in a stiff wind and temperatures dipping below 60 degrees, and it's as if this game was taking place in the middle of the season.

The Ravens are seeking to improve their record in openers under coach John Harbaugh to 8-3. Baltimore has won 18 of its last 20 home games in September.

This is the third career start for Buffalo quarterback Nathan Peterman, who enters with a career QB rating of 38.4.

— AP Sports Writer Dave Ginsburg reporting from Baltimore.

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1:10 p.m.

Miami Dolphins wide receivers Kenny Stills and Albert Wilson are the only NFL players seen kneeling during the national anthem of early games in protest of police brutality and social injustice.

Dolphins defensive end Robert Quinn raised his right fist, and San Francisco wide receiver Marquise Goodwin raised his right arm with fist clenched during the anthem in New Orleans.

Jaguars cornerback Jalen Ramsey and linebacker Telvin Smith Jr. stood during the national anthem after staying in the locker room for "The Star-Spangled Banner" during the preseason before playing the New York Giants.

Titans wide receiver Rishard Matthews also was on the sideline after staying in the tunnel or locker room during the anthem much of last season.

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10:10 a.m.

President Donald Trump has tweeted his disapproval of the NFL on Sunday morning before the first full slate of games.

The president has criticized players for their demonstrations protesting social injustice during the national anthem, and the league for not requiring players to be on the sideline at attention when "The Star-Spangled Banner" is played.

He made reference to lower ratings on NBC in Thursday night's season opener in which Super Bowl champion Philadelphia beat Atlanta 18-12.

"Wow, NFL first game ratings are way down over an already really bad last year comparison," Trump tweeted. "Viewership declined 13%, the lowest in over a decade. If the players stood proudly for our Flag and Anthem, and it is all shown on broadcast, maybe ratings could come back? Otherwise worse!"

The NFL unilaterally passed a policy requiring players to stand at attention for the anthem or to stay in the locker room or in the tunnel under the stands. When that policy met with heavy criticism, it was put on hold while the league and players' association discussed other options. Those discussions are continuing.

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