Zach Johnson wins the Principal Charity Classic in Iowa on Sunday, taking the title in his PGA Tour Champions debut at the Wakonda Club. He posts a final-round 5-under 67 and finishes four strokes ahead of the field. According to the reports, Johnson shoots a 69 in the opening round and then card a 63 on Saturday before closing with his Sunday score to secure the win. Johnson, who grew up in Cedar Rapids, is playing in an event held about two hours from his hometown. The sources describe his victory as a first-time win for him in this home-state setting during his debut appearance, with his overall scoring margin reflecting the lead he builds through the weekend.