Protesters rally for former quarterback Colin Kaepernick outside Ford Field and an NFL football game between the Detroit Lions and the Arizona Cardinals in Detroit, Sunday, Sept. 10, 2017. (AP Photo/Jose Juarez)
The Latest on the NFL's opening Sunday (all times Eastern):
Colin Kaepernick's fraternity brothers gathered before the Detroit Lions hosted the Arizona Cardinals to support the unsigned quarterback.
About 50 members of the Kappa Alpha Psi alumni chapter in the Motor City marched about a mile Sunday in a peaceful protest that ended just outside Ford Field.
"When you look at some of the recent incidents like what happened to Michael Bennett in Las Vegas, it validates the stance that Colin Kaepernick has taken," said Eric Brown, a former president of the fraternity's alumni chapter in Detroit.
Brown said the Kappa Alpha Psi planned to have similar gatherings in Dallas and Atlanta before future NFL games.
Kaepernick remains unsigned after opting out of his contract with the San Francisco 49ers. His supporters believe the league is punishing him for refusing to stand during the national anthem last season to protest police brutality.
Philadelphia Eagles cornerback Ronald Darby injured his right ankle early in the second quarter against the Washington Redskins.
Darby's ankle bent the wrong way as he was running in coverage on tight end Jordan Reed, and he went down. Darby remained on the ground for several minutes as medical staff attended to him. He was carted off the field.
Philadelphia acquired Darby in an August trade with the Buffalo Bills.
Jacksonville Jaguars receiver Allen Robinson left the game against the Houston Texans with a left knee injury and his return is questionable.
Robinson appeared to injure his left knee after catching a 15-yard pass on the team's opening drive. Robinson remained on the field near the Jacksonville sideline before limping to the locker room.
The team announced he would not return.
Robinson led Jacksonville with 883 yards receiving, 73 receptions and six touchdown receptions in 2016.
The Pittsburgh Steelers started their season with a bang.
Backup Tyler Matakevich blocked Cleveland punter Britton Colquitt's first kick and the ball was recovered in the end zone for a touchdown by Anthony Chickillo for a touchdown just 2:16 into the game.
It was an inauspicious start for the Browns, who went a franchise-worst 1-15 last season and are expected to have their problems again in 2017.
Titans coach Mike Mularkey has kicked off the new season with a thud.
The Titans opened the game against the Raiders with Ryan Succop attempting an onside kick that was recovered by Raiders safety Shalom Luani.
The Titans are the first team since the 2009 Vikings (also unsuccessful) to open the season with an onside kick.
That put Oakland and their explosive offense with Derek Carr and Marshawn Lynch at midfield. They needed only four plays before Carr hit Amari Cooper for an 8-yard touchdown pass and a 7-0 lead.
In a show of unity, the Cleveland Browns ran onto the field for their season opener accompanied by police, firefighters, emergency workers and military personnel.
After being criticized for kneeling during the national anthem before a recent exhibition, several Browns players met with owners Jimmy and Dee Haslam about how to better connect with the community. They later met with Cleveland's police chief and one of the ideas hatched was the pregame introduction and the public servants stood alongside the players for the anthem.
Before the anthem Sunday, a video featuring several Browns players, including 10-time Pro Bowl tackle Joe Thomas and rookie quarterback DeShone Kizer was shown on the stadium's scoreboard. During the video, players asked for unity, equality and cooperation during a time of division in our country.
Real pro football is back, with one upset already on the ledger and several intriguing Week 1 matchups upcoming.
After Kansas City stunned the Patriots in New England on Thursday, the schedule Sunday has such standout early games as Oakland at Tennessee and Arizona at Detroit. Later in the day, it's NFC favorites Seattle and Green Bay at Lambeau Field, and the Giants at Dallas in the night game. We know that Cowboys running back Ezekiel Elliott will play as his six-game suspension has been placed in limbo by a restraining order, but we don't know if star Giants wide receiver Odell Beckham Jr., has recovered sufficiently from a preseason ankle injury to suit up.
And Monday night, the Saints bring their newcomer running back, one Adrian Peterson, to Minnesota, where he was a Vikings superstar. Then, the Chargers represent Los Angeles for the first time since 1960 when they play at Denver.
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