At first glance, this quiz probably seems extremely easy. Ludicrously easy, actually.
In reality, it's tougher than a US Open set-up.
In fact, if you can correctly name 30 of the 45 male golfers to have won at least three major championships, we'll be suitably impressed.
Leave your score in the 'Comments' section at the foot of the page.
You've got 7 minutes - good luck!