Tiger Woods’ ongoing treatment for how he manages pain medication will prevent him from attending this week’s Quicken Loans National, the tournament that is both staged by and benefits his foundation and is set to tee off in Potomac without him. In a statement released through Woods’s publicist Sunday night, Rick Singer, the chief executive of Woods’ eponymous foundation, did not outline particulars of Woods’s treatment – which Woods has said is to alter the way he manages prescription drugs in the wake of a DUI arrest last month. “As Tiger said, he is receiving ongoing professional help, and because of that, he cannot attend this year’s Quicken Loans National,” Singer said in the statement.