Russell Knox is leading the way at the Valero Texas Open in San Antonio. Knox shot a seven-under 65 to finish round one atop the leaderboard. Rasmus Hojgaard is one shot back of Knox in second place at six-under par. Denny McCarthy, J.J. Spaun, Aaron Rai, and Matt Kuchar are in a four-way tie for third place at five-under through the first round. McCarthy will be among one of the first players to tee off round two.