Over the Top
A downswing that starts with the shoulders and arms instead of the lower body, throwing the club outside its ideal plane.
This produces an out-to-in swing path, which is the classic mechanical cause of a slice (and, with a closed face, a big pull).
See the full breakdown: Slice
Every common cause and fix for this exact issue.
See the full breakdown: Slice
Every common cause and fix for this exact issue.