[dmildagreat]

I pulled this from EAS blog. Might help clarify the burst button:

"We’re also aware that sometimes you need that extra burst of speed, so we’ve introduced an acceleration burst mechanic that allows you to hold the right trigger and reach top speed more quickly to get around the corner or evade a pursuing defender. There’s a tradeoff though, as running harder – as well as making moves like spins, jukes and cuts – drains your stamina faster, so you may lose your steam on long runs. We’ve included an on-screen stamina meter this year, so you’ll know exactly how much energy you’ve got left on any given play before you run out of gas."