DUSTIN JOHNSON FOLLOWED AN OPENING 63 with a 67 on Friday to take a 1-stroke lead at the halfway point of The Northern Trust, the first leg of the FedEx Cup Playoffs. Jordan Spieth is in second at 11 under after rounds of 67 and 64.
"I'm in a good position heading into the weekend," Johnson said, "and if I can keep swinging the way I am, I think it's going to be a good weekend."
Woods exited Liberty National on Friday after shooting 75 in the first round.
"Due to a mild oblique strain that led to pain and stiffness, I have to withdraw from The Northern Trust," Woods said in a statement.