* Late birdie earns Watson outright lead
* Spieth misses the cut (Updates after completion of second round)
EDISON, New Jersey, Aug 28 (Reuters) - Two-times Masters champion Bubba Watson rolled in a 12-foot birdie putt at the last to claim a one-stroke lead after 36 holes of The Barclays on Friday, the opening event of the FedExCup playoffs.
Watson snapped a five-way tie for the lead with the birdie that gave him a two-under-par 68 at Plainfield Country Club for a seven-under 133 total.
Missing the cut and relinquishing his world number one ranking was Masters and U.