The Colorado product started the beginning of last month without a win on the PGA Tour. But, between now and then, he's notched two victories - the Wells Fargo Championship, and now, the US Open.
"You know, this is now my second win on the PGA TOUR and first one was surreal and this one is surreal. It hasn't quite hit me yet. Walking up 18 was pretty emotional, and then finishing," Clark told reporters after his win on Sunday.
"But yeah, it's been a whirlwind of the last five, six weeks. It's been -- just so blessed and humbled to be here."
Clark himself was emotional from the second he tapped in the final putt that won the tournament by one-stroke over four-time major winner McIlroy.
But, it seems, no one might've been more happy than NFL running back Christian McCaffrey.
McCaffrey, 27, is currently in his sixth season in the league after being traded from the Carolina Panthers to the San Francisco 49ers mid-way through last season.
During his six seasons, he's been selected for multiple Pro Bowls, and has been named to both the first and second all-pro teams.
And it turns out, McCaffrey also went to high school in Colorado with the newest major champion in golf.
And quite understandably, the NFL pro was elated when his long-time friend clinched the 123rd US Open.
Here's a clip of McCaffrey freaking out after Clark won:
McCaffrey had also congratulated Clark after his maiden PGA Tour win last month.