Gravity Is Undefeated

When I was 34, I heard Stan Smith give a lecture on the role of the head in posture and balance. Being a young, all-knowing coach at the time, I thought it was obvious. Of course posture and balance matter.

Seven years later, I had an epiphany. I finally saw what true posture and balance actually look like. It is not obvious. Not even close. I had to pay attention. Close attention. And in my experience, it is the root cause of most technical errors coaches are trying to solve. But once you see it, posture and balance become an essential part of your technical lens.

As we head into the US Open, I want to highlight something that connects every player on every court, from the youngest red-ball beginner to the world's top professionals.

Gravity is undefeated.

While we often sort coaching concepts by level, some principles transcend categories entirely. Posture and balance are two of them.

Why Posture and Balance?

In tennis, and all sports, there sits a single foundation: posture and balance. They are not advanced concepts reserved for elite players. They are not basics that players "graduate" from. They are the organizing principle around which every other technical element is built.

When posture and balance break down, everything built on top of them breaks down too.

What Are Posture and Balance?

Posture begins with a straight spine and a head aligned above relaxed shoulders. This is not rigidity or stiffness. It is structural integrity. Good posture allows the body to organize itself efficiently, improving balance, movement, breathing, and ultimately, shot quality. A player standing tall and loose is a player whose body is ready to move.

Balance is the ability to maintain a stable, centered, and coordinated body position — keeping the head and eyes level so that energy can be transferred cleanly and efficiently. Balanced players strike the ball with greater consistency and efficiency and are immediately ready for the next action. Crucially, balance is not static. It is dynamic, constantly recalibrated through every movement and stroke sequence.

What to Watch For

It is easy to take posture and balance for granted. We see a player standing upright and assume all is well. But verticality is not the same as balance, and standing straight is not the same as structural posture.

Make these your checkpoints. A player in balance will show:

• Head level and centered above the shoulders

• Eyes level

• Nose aligned with the navel when initiating the first move

• Spine organized through the shot

   

A player out of balance will show:

• Head drifting off-center

• Eyes tilting

• Nose veering away from the midline during first move

• Spine and head alignment lost at contact

Elite movement is not just about getting to the ball. It is about arriving on balance, with proper posture. Watch what happens as a player makes their first move to the ball out of their split or float step. The loss of balance usually begins with this initial move as the player leads with their head rather than moving from their torso or center. Once a player starts out of balance they will struggle to regain balance, expending energy as they fight gravity.

The same applies to the end of a stroke, where players often try to hit and recover simultaneously — again losing balance, sacrificing their form for speed. The maxim holds at every level: Start on balance, arrive on balance, finish on balance.

Ask your players to watch for it at the US Open. The best players in the world make it look effortless precisely because their posture and balance are so deeply ingrained. That effortlessness requires vigilance and constant focus. It is precisely why they are the world's best.

Balance and posture: simple to name, a career to master. After all, gravity is undefeated.