What's the common swing flaw between Pro VS Club Golfers? The Transition. Club Golfers tend to get to over-the-top, too steep leading to steep impact and a slice. The Pro Golfer face the opposite issue where they tend to fall too much behind themselves and get stuck.
Watch Markus break down this commonality, what you can do as a Pro and as a Club Golfer and Tiger Woods talk about exactly this in 1999 with his "Ole move".