For Lopez, of Dallas, a six-birdie, three-bogey round was enough to get him to the top of the leaderboard. He had a bogey on his second hole of the day, but recovered well. He made back-to-back birdies at Nos. 5 and 6, followed by three straight at Nos. 10-12.
Fellow Texan Chad Sewell, of Conroe, is solo second after a 3-under 69. But for a bogey at the 18th hole, Sewell might have a share of the lead.
Behind that, Benjamin Nelson of Madison, Miss., had a 2-under 70. Eric Brown of Lake Charles, La., was also on that number.
After Thursday’s second round, the field will be cut to the low 32 players and the tournament will reset to match play.
