Andrew Landry pulled away from the field at the 2018 Valero Texas Open to earn his first career PGA Tour victory.

The American entered Sunday with a share of the lead after three straight rounds in the 60s, and he was just as good in Round 4 with a final-round score of 68. He finished the tournament 17 strokes under par, two ahead of Sean O'Hair and Trey Mullinax in second place at TPC San Antonio AT&T Oaks Course.

Landry won the biggest prize of his career with the winner's share of the $6.2 million purse.

Final Leaderboard

1. Andrew Landry (-17)

T2. Sean O'Hair (-15)

T2. Trey Mullinax (-15)

4. Jimmy Walker (-14)

5. Zach Johnson (-13)

6. Joaquin Niemann (-12)

7. Ryan Moore (-11)

T8. Kevin Streelman (-10)

T8. Andrew Putnam (-10)

T8. Chris Kirk (-10)

Full results available at PGATour.com.

Landry entered the day tied with Zach Johnson for the tournament lead at 13 strokes under par. However, he came ready to play and immediately gave himself some breathing room:

He finished four under on the front nine and went 45 straight holes in the tournament without a bogey before finally making a mistake on the 11th hole.

This was enough to keep the door open for Mullinax, who set a course record with his 62 in Round 3. He was able to creep within one stroke after carding birdies on both No. 10 and No. 11:

The duo matched each other with pars on the next five holes to keep the score the same.

Of course, even saving par was impressive at times, including this putt from Mullinax that set him up with an easy par putt on No. 16:

A Mullinax bogey on 17 ended the run of pars, and it took some pressure off Landry, who held on with pars on 17 and 18. 

The 30-year-old posted 21 birdies in the tournament, but his most impressive feat was his ability to avoid bogeys. He only had four over the course of the four days, including just one in the last two rounds combined.

Johnson tried to keep up with the leaders but only managed an even-par 72, dropping him from first place to fifth.

Joaquin Niemann turned heads with his finish, as Will Gray of Golf Channel noted:

Still, no one could keep up with Landry and his incredible consistency in San Antonio.

The PGA Tour travels to TPC Louisiana next week for the Zurich Classic of New Orleans, a team event that was won by Jonas Blixt and Cameron Smith last season.