Alfred Morris signs with Dallas Cowboys

The headline pretty much tells you what you need to know — former Washington Redskins running back Alfred Morris has signed a contract to play for NFC East rival Dallas Cowboys.

Morris, 27, who set a franchise record for rushing yards in a single season during his rookie year in 2012, has been a mainstay for Washington, starting all 64 games during his four-year career.

One factor that might impact Morris’ future productivity is his work level to date. Morris has the most carries in the NFL over the last four seasons with 1,078.

The departure of Morris means that Washington’s two best players from 2012, Robert Griffin III and Alfred Morris, both rookies that year, will not be on the team in 2016. Who would have predicted this at the time?

Morris had some of his finest games against the Cowboys, rushing for 710 yards and seven touchdowns against Dallas.

Although Morris rushed for a single season franchise record 1613 yards as a rookie in Washington, his production declined every year after that. Morris’ yards per carry declined from 4.8 yards to 4.6 to 4.1 to 3.7 in 2016. His rushing yards declined, too, falling to 1275 in 2013, 1074 in 2014 and 751 in 2015.

Dallas’ leading rusher in 2015 was Darren McFadden, who rushed for 1089 yards and 4.6 yards per carry in 2015. Presumably, Morris will join the Cowboys not as a starter, but as someone to give the injury-prone McFadden a break several times a game.

Washington currently has four running backs on its roster: Mack Brown, Matt Jones, Silas Redd and Chris Thompson.