Oversized grips can leave the face open and push right
Putting oversized grips on your clubs can leave you hitting the ball to the right and unable to square the face; the speaker says the face stays open and you can end up slicing it. He attributes this to the bigger grip getting the radius bone on the wrong side of the arm.
Channel: Todd Graves
Watch official source at 6:08Why this context matters
Framed as a common problem the speaker gets asked about after golfers install bigger grips.