AP

There wasn’t much to separate Rex Grossman and John Beck on Thursday night.

Both had four drives and led touchdown drives with the first team offense. Both threw a touchdown pass. (Beck did it with backups.) Both players had a few drives with the starters that looked ugly, but they bounced back. (Beck also threw an interception.)

It was a mixed performance with promise.

“I’m going to evaluate them all the way through camp, all the way through the last preseason game, possibly up to the day before we play the Giants,” coach Mike Shanahan said via CSNWashington.com. “It all depends on if someone separates themselves.”

That didn’t happen Thursday night.

“They’ve played well enough to date for people to see that, even outside our organization, and hopefully they keep on playing well,” Shanahan said.

The Redskins are the rare team that may use the fourth preseason game as more than a running of the slappies.

UPDATE: Sound from the quarterbacks, including Beck using the phrase “mental quicksand.”