Clayton Kershaw has walked just six batters this season as he marches towards history.

The Los Angeles Dodgers pitcher has more hits to his credit (seven) than free passes.

Kershaw has a 20.3 strikeout-to-walk-ratio. The record is currently held by Phil Hughes, who had a 11.6-to-1 ratio in 2014.

"What separates Clayton a little bit more is his ability to pitch with conviction," catcher A.J. Ellis said. "He trusts himself, he trusts his weapons. There is no tentativeness when he throws a pitch.

"It’s funny how, even when a pitch that has the same velocity as another pitch, the one that is thrown with conviction just always seems to have that extra aggressiveness, that extra life to it. And as that ball just kind of gets to me in the hitting zone, you can feel that energy behind it versus one that is trying to be placed somewhere."