Detroit Lions running back Jahvid Best has been out for the last year because of a concussion he suffered in a loss to the San Francisco 49ers. Best went on to miss the remainder of the 2011 season, and he was unable to get cleared during the offseason. As a result, the Lions put him on the PUP list, keeping him out for at least the first six weeks of the regular season.

With those six weeks almost up, it's time for the Lions to figure out if they will be able to activate Best. To do that, Best is going to undergo a "battery of tests" in the next week, according to ESPN's Adam Schefter.

Jahvid Best, who hasn’t played since suffering his last concussion Oct. 16, 2011, will be undergoing a battery of tests this week to determine whether Lions will activate him off PUP.

If Best passes the tests and is finally cleared for contact, the Lions will be able to ease him back into things with a three-week window of practice before he needs to be activated and added to the 53-man roster. If Best is once again unable to pass those tests, then the Lions may decide to just put him on injured reserve, ending his season.

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