Zach Johnson wins the Principal Charity Classic on Sunday in Des Moines, claiming a four-stroke victory in his debut at the PGA Tour Champions event held at Wakonda Club. Across the four rounds, he finishes at 5-under-par, with a final-round 67 after posting a 63 on Saturday. Reports say Johnson’s opening round is 69, and one outlet notes he is 3-over through his first two holes early in the tournament before rebounding with his weekend scores. The win is described as his second PGA Tour Champions victory of the season. Johnson is from Iowa, having grown up in Cedar Rapids, roughly two hours from the event, and he is playing in his home state. Multiple sources agree on the key details of his Sunday score, the margin of victory, the tournament name, and the venue, while differing only on emphasis regarding the home-state context and early-round progression.