NASHVILLE, Tenn. -- Tennessee Titans general manager Jon Robinson recently said he wanted a roster full of uncomfortable players who were not sure about their job security.

Dorial Green-Beckham didn't feel a cause to be uncomfortable. He was a 2015 second-round pick. As unrefined as he is, he's a tantalizing target at 6-foot-5, 237 pounds.

But his inconsistency was even more apparent as he worked in a group of receivers that added veteran Rishard Matthews and rookie Tajae Sharpe, precise route runners who rarely make mistakes or drop passes.

DGB made a key block on a 71-yard touchdown run by DeMarco Murray in Saturday night's preseason game. But later, on a go route when the Titans wanted to throw deep to Green-Beckham up the left side, he didn't run hard off the line.

"I think we made too many mistakes with DGB early [Saturday night]," head coach Mike Mularkey said. "I would have liked to see him have a chance to make that play on the go route. I thought his release was poor, which immediately gives you no chance on the deep ball."

Robinson, who traded Green-Beckham to the Eagles on Tuesday, wants nothing to do with that sort of effort and mentality. It's a mentality, by the way, that will get Green-Beckham crushed in Philadelphia by a far less-forgiving fan base.

The Titans got Dennis Kelly in return. The 6-8, 321-pound offensive lineman played tackle and guard for the Eagles. Tennessee had a big need for a veteran lineman who could serve as the third tackle.

Post-trade, the Titans have Matthews, Sharpe, Kendall Wright, Andre Johnson, Tre McBride, Harry Douglas and Justin Hunter as their top seven receivers. Five seems like the most likely number to make the 53-man roster, but it could be four or six.

A message has been sent to the rest of the roster. If you don't operate at full speed and if you don't fall in line, you might feel safe.

But you shouldn't.