Brandon Copeland and re-signed defensive lineman Xavier Cooper on Monday.Copeland missed last season after tearing a pectoral muscle during the preseason. He had 30 tackles and one forced fumble in 32 games the previous two seasons with the Lions.The 26-year-old Copeland is expected to serve as a backup on defense and be a key part of the Jets’ special teams unit.”Too many different levels of excitement to put into words Zach Gentry Jersey ,” Copeland told the Jets’ website. ”Coming off of injured reserve, having to sit every Sunday, Monday and Thursday and watching other people play, I’m first and foremost excited to get back to the game that I love.”He signed with Baltimore as an undrafted free agent out of Penn in 2013 and spent time later that season on Tennessee’s practice squad. After signing with Orlando of the Arena Football League in 2015 Nick Bosa Jersey , Copeland impressed Detroit after participating in the NFL Veterans Combine. His grandfather, Roy Hilton, played for the Baltimore Colts against the Jets in the Super Bowl in 1969.”He played defensive end against Joe Namath and all those guys,” Copeland said. ”I know he’s going to be very proud of his grandson and now my job is to continue to make him proud.”Cooper was not tendered as a restricted free agent L.J. Collier Jersey , but was brought back to serve as a rotational defensive lineman. He had 16 tackles and one sack in eight games, and his play increased when Muhammad Wilkerson was benched at the end of last season.Cooper was a third-round pick by Cleveland out of Washington State in 2015. He has also spent time with San Francisco, and has 56 career tackles and three sacks.— Imagine being an NFL wide receiver and having to line up against the same defender play after play? It starts out as a good clean battle but after a few plays, the level of competition begins to rise. An elbow here Marquise Blair Jersey , a subtle but effective facemask there and before you know it, the frustration boils over and the extracurricular activity begins. Defensive tackles against offensive tackles and tight ends against linebackers. Play after play of pushing, straight-arming, and tackling. Of course D.K. Metcalf Jersey , this goes on when teammates practice as well. Intense competition is not just reserved for game day.Sports rivalries have entertained us for years. If it isn’t a fierce competition between two teams, it’s a fierce battle between individuals. Many prefer to settle their differences on the field like true professionals but some can’t seem to let things go that easily. They continue to trash-talk through the media. Newspapers and television have long been platforms for launching verbal grenades and now social media sites like Twitter have become the modern-day arenas for keyboard gladiators looking for a war of words.“Hate” is a strong word but, then again, professional football players are strong guys so it might be fitting that there are several cases of players that hate each other in the NFL. Some well documented personal beefs have been aired over the years. The causes of many of these conflicts have been big egos and over the top competitiveness as was the case in Randy Moss and Darrelle Revis’ spat. But Cody Barton Jersey , there are several other triggers too. A good example was Terrell Owens publicly criticizing Donovan McNabb. This episode caused much unresolved hostility between the two. Then again, T.O. has a lot of unresolved hostility with several of his ex-quarterbacks.Here are 15 cases of NFL players who hate each other in real life. The degrees of dislike may vary, but deep resentment festers between many of these players.