Every serious cricket club now counts overs. There are guidelines, there are limits, there are coaches keeping tallies in notebooks and parents who know exactly how many the bowler got through on Sunday.

All of that is good. It is also measuring the wrong total.

The load that puts a young fast bowler’s back at risk is not “overs.” It is total ballistic rotational load on a growing spine — and cricket is only one of the places it comes from. For a lot of the most athletic children in any squad, it is not even the main one.

What the spine is actually counting

A fast bowling delivery loads the lower back through a specific combination: rotation of the trunk, under speed, with sideways bend. Repeat that often enough and the same small section of vertebra takes an asymmetric load several hundred times a week. Bone responds to repeated asymmetric load the way any material does. Eventually it can fail — a lumbar stress fracture.

The spine does not know which sport the rotation came from. It only knows how much it got.

So consider what else a talented 14-year-old might be doing in the same week as their twelve overs.

• Tennis. A serve is a ballistic rotation under speed with trunk extension and sideways bend. It is mechanically closer to a fast bowling delivery than most people realise. A junior tennis player hits a lot of serves.
• Athletics throws. Javelin in particular — the javelin throw and the bowling action share a great deal, which is precisely why throwing is such useful training for bowlers. It is also loading the same tissue.
• Hockey. Repeated rotation, repeated flexed-trunk positions, high volume.
• Squash and badminton. Constant rotation and overhead work, and a lot of it in a short session.
• Golf. A golf swing is rotation under load. A range session is a hundred of them, and junior golfers hit a great many balls.

Rugby belongs in a separate category. It is not rotational in the same way, but it is a serious and sustained load on a growing spine, right through the winter, at exactly the time of year cricket assumes a bowler is resting.

How the maths goes wrong

Here is the scenario, and I have seen versions of it many times.

A 14-year-old plays district cricket, club cricket and school cricket. They also play county age-group hockey and they throw for the school athletics team in the summer. Each individual coach is entirely reasonable. The cricket coach is inside the bowling guidelines. The hockey coach is within a normal training week. The athletics coach has them throwing once or twice a week, which is nothing.

Nobody has added it up, because nobody is in a position to. Each coach sees their own slice. The only person who sees all of it is the parent, and the parent has usually not been told that these loads belong in the same column.

So the child with the broadest athletic ability, the one who is best at everything and therefore selected for everything, is carrying the highest total rotational load in the squad — and is the least likely to be flagged as at risk, because in no individual sport are they doing too much.

That is a large part of why it is so often the most athletic children who get injured first. It is not bad luck. It is an accounting failure.

The spike is the danger, not the total

The word to hold onto is spike.

Bone and connective tissue adapt to load given time. A bowler who has built up steadily through a winter can handle a serious summer. The injuries cluster around sudden jumps: almost nothing through the winter, then a school week of cricket every day in June. Two weeks of nets, then a festival. A return from injury straight back into full training.

It is the jump, not the total, that does the damage. Which is also why a bowler whose action is mechanically sound is not immune — a safe action is not a licence for a sudden spike. And it is why the two causes compound so badly: a spike in workload put through a faulty action is the worst combination there is.

What to actually do

Count everything in one place. One note on a phone, per week: bowling, and every other ballistic rotational session — serves, throws, hockey, squash, badminton, golf range sessions — plus rugby separately. You are not trying to build a sports science model. You are trying to see the total that nobody currently sees.

Watch the transitions. The dangerous weeks are the ones where the total jumps: start of a season, school cricket weeks, festivals, tour weeks, the first fortnight back after a lay-off. Plan those rather than discovering them.

Tell the other coaches. A hockey coach who knows a child is bowling twelve overs a weekend can make a sensible decision. One who does not know cannot.

And get the mechanics checked. Workload management reduces risk. It does not fix an action that is loading one vertebra asymmetrically every delivery. If the trunk is collapsing sideways at release, that needs correcting on its own terms — and it is visible on a phone camera long before anything hurts.

Any persistent lower back pain in a young fast bowler should be assessed medically and promptly. Not stretched off, not bowled through, not left until the end of the season.

Ian Pont is Director of Cricket at the National Fast Bowling Academy. This article is general coaching guidance and not medical advice — if your child has back pain, see a doctor or physiotherapist.