Perhaps Ricky Bobby said it best when he said: "If you ain't first you're last."

And as absurd as this might sound, this is precisely the mantra many NFL athletes will be saying to themselves as they go through training camp next month.

As I mentioned in my earlier piece looking at the key running back camp battles to watch this offseason, the NFL is a no-holds-barred, high-stakes affair. Whether you're an NFL rookie trying to carve a role for yourself on your new team or a practice squad player looking to convince the coaching staff that you deserve a roster spot, you -- like everyone else -- have a lot on the line during this time of the season.

And with the massive shuffling of free agents and influx of talented rookie wideouts into the NFL this offseason, the landscape for receivers in particular has changed quite a bit, making it seem as though everyone now has something to prove.

With all that being said, let's take a look at the five wide receiver training camp battles with the highest stakes involved this year.