(AP) -- Detroit Lions running back Jahvid Best insists he's not worried about bouncing back from a concussion that shortened his second NFL season.
Best says Monday that the concussion he had in college was worse than the one that limited him to six games last year.
He has been working out with his teammates during organized team activities and expects to be cleared for contact before training camp starts next month.
Detroit drafted Best in the first round two years ago after a concussion ended his career at California. He says that concussion was the first of three he knows he's had.
The Lions need Best in the lineup to balance their one-dimensional offense.
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