There is a comfortable idea in junior coaching that the front leg is something you leave alone. Get the run-up right, get the alignment right, get the bowler moving well, and the front leg will sort itself out.

It will not.

The front leg is not a by-product of a good action. It is one of the load-bearing parts of it, and it has to be coached directly, deliberately and early. A bowler who lands on a soft, bending front leg is leaving pace in the crease every single ball — and no amount of work elsewhere will put it back.

What the front leg actually does

At front foot contact a fast bowler is travelling forward at speed. The front leg lands and stops the base of the body dead.

Think of a car hitting a wall. The car stops; everything that is not bolted down keeps going. That is the entire mechanism of fast bowling in one picture. The base decelerates hard, the top half is thrown forward over it, and the ball goes with it.

Now picture the same car hitting a hedge. It slows down gradually, the energy soaks away, and nothing gets thrown anywhere.

A bending front leg is a hedge. A straight, braced front leg is a wall. We call it the ram rod.

What “braced” means

It is not a vague instruction, and it should not be coached as one.

The heel strikes first and the foot goes down onto its whole plate — not the toes, not a tentative dab. The foot points down the pitch, laces at the batter. The leg is straight on landing and it stays locked out from front foot contact right through to the ball leaving the hand. That window is only three or four frames of video, and it is where fast bowling happens.

A leg that lands straight and then buckles through release has not braced. It has just landed straight.

Why nothing else compensates

This is the part the “it will take care of itself” school gets wrong.

You can have a lovely run-up, clean alignment on railway tracks, a back foot that drags through the crease exactly as it should, and hips that drive hard — and if the front leg gives way at contact, all of that momentum goes into the knee instead of up through the body. The hips have nothing to rotate against. There is no stretch between hips and shoulders, because the base never stopped. The arm is left to find the pace on its own.

Everything upstream matters. We coach all of it. But the front leg is not downstream of it, waiting to be fixed as a side effect. It is its own job.

The separation connection

The brace is also what creates separation — the stretch between the hips and the shoulders that stores pace and releases it.

When the base stops dead on a braced front leg, the hips are driven round against it while the shoulders are still held back. That is the loaded spring. One mile per hour gained at the hips can be worth up to ten at the arm, and the front leg is what lets the hips work.

A soft front leg lets the whole body rotate together, as one block. No stretch, no spring, no pace.

Why young bowlers don’t brace

Usually for one of three reasons, and all of them are coachable.

They have never been asked to. Nobody has told them it matters, so they land however feels comfortable, and a slightly bent knee always feels more comfortable.

They don’t have the strength yet. Holding a straight leg against the force of a fast bowler landing is hard, and it needs building — in the gym as well as the nets.

They have been told to land softly. Well-meaning advice to protect the knees, which trades pace for comfort and does not deliver the protection either. A leg that absorbs force by bending is still absorbing it; it just does nothing useful with it.

The fix in each case is the same: coach it. Name it, show it, drill it, build the strength to hold it, and check it on video until it is automatic.

How to check it tonight

Film the bowler from side-on, square of the crease, at about stump height. Two deliveries is enough.

Step through the footage frame by frame and find the moment the front foot lands. Look at three things.

One. Does the heel land first, then the whole foot — or is it the toes?

Two. Is the leg straight at the moment of landing?

Three. Does it stay straight for the next three or four frames, until the ball has gone — or does the knee visibly bend as the body comes over it?

Be honest about the third one. A little give at the moment of impact is not the same thing as a leg that collapses through release, and it is the collapse that costs the pace. If the knee is clearly still bending as the ball leaves the hand, that bowler has a job to do, and it is a job nobody else in the action can do for them.

The honest summary

A straight, braced front leg is not a nice detail that arrives once everything else is tidy. It is the wall the whole action hits. Coach the wall.

Ian Pont is Director of Cricket at the National Fast Bowling Academy and has coached fast bowlers at international level.