Do not be misled by the grin, which is so ever-present, it borders on painted-on permanent.
Nice guys finish last? Not necessarily, but do not think for a moment that the smile on Matt Kuchar is a sign that he's a pushover or isn't grinding harder than everybody else.
A matter of minutes after Kuchar hoisted the crystal trophy for winning the Players Championship on Sunday, he was asked about how comparatively few times he had delivered a title, despite contending seemingly every time he tees it up.
This admittedly delicate inquiry, well-phrased by a veteran media member, was met with a hilarious blast from the usually mild-mannered man of the moment.
"Yeah, suck it, big guy," Kuchar roared back, drawing the biggest laugh of the week.
Truly uncharacteristic, though, it wasn't.