New England Patriots tight end Rob Gronkowski did not make the trip to Buffalo for Sunday's season opener against the Bills.
Gronkowski, coming back from multiple forearm and back surgeries, was listed as doubtful on the team's injury list on Friday.
Gronkowski missed the preseason but returned to practice this week. Coach Bill Belichick said Gronkowski is considered day-to-day, although he reportedly has been expected to miss the Patriots' first two games. New England has a quick turnaround as it hosts the New York Jets on Thursday.
Undrafted rookie Zach Sudfeld is expected to be the Patriots' primary receiving threat among tight ends in Gronkowski's absence.
The Patriots re-signed running back/kick returner Leon Washington and promoted offensive lineman Josh Kline from the practice squad. They released defensive linemen Jermaine Cunningham and Justin Francis off injured reserve.
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The New York Jets released quarterback Brady Quinn on Saturday and plan to re-sign him on Monday, according to ESPNNewYork.com.
The Jets did not activate Quinn for Sunday's season opener against the Tampa Bay Buccaneers.
With Mark Sanchez out with a shoulder injury, the Jets signed Quinn to a one-year, $715,000 contract last Monday. The Jets want to keep him around since their only healthy quarterbacks are rookie Geno Smith and Matt Simms. Neither has played in an NFL game.
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Cincinnati Bengals offensive tackle Andrew Whitworth is out for Sunday's game against the Chicago Bears.
Whitworth, a Pro Bowler, was previously listed as doubtful as he is coming off knee surgery. He did not practice during the week.
He will miss his first start in more than four seasons, ending a consecutive streak of 67 starts.
Anthony Collins, a sixth-year player out of Kansas, will start in place of Whitworth.
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Houston Texans safety Ed Reed will not start Monday's season opener against the San Diego Chargers but could play, coach Gary Kubiak said on Saturday.
Reed is considered a game-time decision as he is coming off hip surgery.
Reed was limited in practice during the week. He was on the physically unable to perform list during training camp and the preseason. He had surgery in April.
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The Miami Dolphins finalized a four-year contract extension with linebacker Koa Misi, the team announced.
The deal is worth $17 million, according to FOX Sports.
Misi was entering the final year of his rookie deal. He is now signed through 2017.
Misi had 65 tackles, 3.5 sacks and two forced fumbles last year.
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The Dallas Cowboys placed defensive end Ben Bass on injured reserve on Saturday.
Bass is out for the season with a separated shoulder he sustained in practice this week. Bass played in two games for the Cowboys last season.
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The Oakland Raiders placed injured left tackle Jared Veldheer on the injured reserve-designated to return list on Saturday.
The team hopes that Veldheer, who had triceps surgery in August, can still play this season.
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Free agent wide receiver Brandon Lloyd is planning to retire, according to CBS Sports' Jason LaCanfora.
Lloyd was let go by the New England Patriots after last season. Lloyd was a salary-cap casualty as he was due $3 million this season.
Lloyd started 15 of 16 games and had 74 catches for 911 yards with four touchdowns for New England in 2012, his only year with the Patriots.
He also played for the San Francisco 49ers (2003-05), Washington Redskins (2006-07), Chicago Bears (2008), Denver Broncos (2009-11) and St. Louis Rams (2011).