Collin Morikawa also birdied the second hole to move to 2 under.
Phil Mickelson now has played 30 times in the U.S. Open and he only has a silver medal — six of them — to show for it.
His week at Torrey Pines ended with a 40 on the back nine for a closing 75, putting him at 11-over 295 for the week. Since the last of his six runner-up finishes at Merion in 2013, he has either missed the cut or finished over par in the U.S. Open.
At least he gets more chances. By winning the PGA Championship last month, the 51-year-old Mickelson is exempt from qualifying for the U.S. Open through 2025.
The leading groups are still just under two hours away from teeing off. No one has broken par among the 11 players who have finished. Patrick Reed and Hideki Matsuyama are finishing up their rounds and both appear headed for sub-70 scores.