"When Washington Redskins offensive coordinator Kyle Shanahan calls "Tiger," pass-catching tight ends Chris Cooley and Fred Davis line up as wide receivers on opposite sides of the formation. They also could stand together or take backfield positions as part of many formations in the personnel group.

The constant, however, is that Cooley and Davis are on the field simultaneously, a scheme the Redskins hope to use often this season. The team envisions big things from the athletic pair, who figure to be busy, given that many of Washington's wide receivers are either unproven, coming off injuries or past their primes.

"I think it'll be pretty easy" to use them at the same time, Shanahan said after practice Tuesday at Redskins Park. "When you have two guys who can do everything, you don't have to try too hard to incorporate 'em in. You just call plays, and you move 'em around wherever the weakness is in the defense. Our quarterback can go anywhere as long as we've got guys there who can win [individual battles] and separate.

"You've got two guys who can move around and they've got the brains to understand [the offense]. You can get into different packages to where they're playing tight end one position, receiver the next and fullback the next. It's just wherever you line 'em up. And if you can do that, and have all the same looks but make all the players interchangeable, it really limits what a defense can do."

"Tiger" is not the only personnel group in which Cooley and Davis have interchangeable roles. They also have responsibilities in goal-line packages as well as some other specialty areas, Redskins coaches say. But their play-making ability is most intriguing to the coaching staff. "