The similarities between baseball and golf seem endless. This video explains the arm rotation possible or usable to help deliver the club or bat squarely onto the strike. Ben Hogan learned a lot about the golf swing from Sam Byrd- who was a baseball player and a PGA golfer.
Over the top swing planes are tough to fix just by thinking your way out of that move. Here is a driving range tip to help shift that path to better.
Cupped wrist versus bowed wrist is a point of discrepancy in older teaching compared to modern day instruction. Here is the deal and why sticking to the goal of one of these will make you a better player in the long run.
Connecting the arms closer to the body for impact is a surefire way to have greater control of the club and enable the big muscles to activate and add power to the release and through swing. The 4:30 path is key. 
In this latest video I show you how the wrists can/do work using a new device -Hackmotion- which registers the wrist conditions throughout the swing. Cupped or Bowed are explained in detail
Drill One is the starting point for all golfers I work with. Drill One creates consistency of strike and ball flight and promotes speed. Learn more about it here in this video.