Although x-rays on his sore left wrist turned out to be negative, Lakers forward Xavier Henry said he will receive an MRI today for precautionary reasons. Henry said the injury happened at some point in the third quarter of the Lakers’ 117-107 loss Friday to the Washington Wizards at Staples Center. That could mark a discouraging sign considering Henry has also nursed pain from the lateral meniscus tear in his right knee that sidelined him this season for 29 games. Unlike what has happened most of the Lakers’ roster this season, Henry believes his MRI will bear good news.