With the fog delay, 75 players did not finish their rounds as play was suspended at 9:29 p.m. (ET). They will return to the course at 10:30 a.m. to complete their rounds.
Kent Christopher is one shot behind Hakes at minus-2 and is also through nine holes at Bel-Air Country Club.
Kemp Richardson, the defending champion, owns the clubhouse lead at 1-under-par 69. He is joined at minus-1 by Johnny Stevens and Jack Vardaman, who have each played nine holes.
'I'm driving pretty well and putting pretty well,' said Richardson, who also won the 2001 Senior Amateur. 'It's always good anytime you can come out and shoot 69.'
Fred Cox and Mark Bemowski are in the clubhouse one stroke behind Richardson at even-par 70.
At the conclusion the two stroke-play rounds, the field will be cut to 64 players who will move on to the match play portion of the event.
The first round of match play will take play on Monday, with the second and third rounds scheduled for Tuesday. The quarterfinals and semifinals are slated for Wednesday with the 18-hole final to be played on Thursday.