Brian Harman wins British Open, defying challenges and weather.
Responds to bogeys with back-to-back birdies, securing lead.
Finishes with 1-under 70, clinching six-shot victory.
At 36, oldest first-time major winner since Sergio Garcia.
Harman's win surprises, not expected at the beginning.
Previous win in 2017 Wells Fargo Championship, 167 tournaments ago.
Third PGA Tour title in 12-year career.
Harman's prowess on the course matches his outdoor skills.
Impressive performance at British Open showcases exceptional talent.