Chemistry between a wide receiver and quarterback is paramount to the success of an NFL offense.
But it's good to have the running back on the same page with his team's passer, too.
That will be one of the challenges the Buffalo Bills face when they report to training camp in late July. With Tyrod Taylor, EJ Manuel and Matt Cassel competing for the starting job, there will be fewer opportunities for each of them to develop chemistry with their playmakers than their would if one player got the starting reps.
That's not an entirely new scenario for running back LeSean McCoy, though.
During McCoy's six seasons in Philadelphia, he played with six different starting quarterbacks.
“I’m used to it,” he said. “We had a lot of different quarterbacks coming in and going out. I’m kind of used to that. The biggest thing here is, all the quarterbacks are getting reps with the first team. It’s not like I’m not getting reps with none of the quarterbacks. They’re all rotating out with the ones—each day they have their day with the ones. They get a lot of work with the first team.
"I don't know how it is for the other players, but for myself, I've been in this position a couple times, so I'm kind of used to it. You just wait it out. Let the guys compete. You encourage them. You support them each play, each drive. Let them handle the offense. ... That's all you can do."
No matter who wins the job, handing the ball to McCoy will be a big part of the job description.