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Research project on bowling like Jasprit Bumrah

yorker555

Cricket Spectator
Hello everybody, this is my first time on this forum.
I am doing a research project for my class and I have chosen the topic of bowling like Jasprit Bumrah. I have recently started to get into cricket and a player who particularly caught my eye was Bumrah and his unorthodox style of bowling. For this project, I needed perspective and feedback from experts in the sport and/or enthusiasts and I was hoping to find some on forums such as these. I have a couple of questions and I would be grateful to anyone who can give me an answer to use for my project.


Technical & Biomechanics-Based Questions
  1. What are the key biomechanical factors that make Jasprit Bumrah’s bowling action effective despite being unorthodox?
  2. How does Bumrah generate pace and bounce with such a short run-up, and how does that compare to traditional fast bowlers?
  3. Are there any common injury risks associated with replicating Bumrah’s bowling action, and how can they be minimized?
  4. Does Bumrah’s hyperextension help or hinder his accuracy and speed in the long run?
  1. How does Bumrah’s release point and arm path compare to bowlers like Pat Cummins or Dale Steyn?
  2. Is Bumrah’s action sustainable for a long career, or will it lead to early burnout like some other unorthodox bowlers?
  3. Do you think young bowlers should try to copy Bumrah’s action, or is it too unique to replicate effectively?
Any answers, feedback, and perspectives would be much appreciated.
Thank you
 

wellAlbidarned

International Coach
Hello everybody, this is my first time on this forum.
Welcome, hopefully you stick around. Best place on the net to discuss cricket.

  • What are the key biomechanical factors that make Jasprit Bumrah’s bowling action effective despite being unorthodox?
  • How does Bumrah generate pace and bounce with such a short run-up, and how does that compare to traditional fast bowlers?
  • Does Bumrah’s hyperextension help or hinder his accuracy and speed in the long run?
His wrist, elbow, and arm length relative to his height. He has an enormous range of motion in his wrist and a freakish level of hyperextension in his elbow which allows him to generate an enormous amount of pace from the end of action "snap", like a human trebuchet.

While his action looks extremely odd, in his delivery stride (which is the part that matters) he gets in a mostly orthodox position. Braced front leg, good chest drive, strong front arm.

  • How does Bumrah’s release point and arm path compare to bowlers like Pat Cummins or Dale Steyn?
He releases the ball from significantly closer to the batsman than more orthodox bowlers. It's well established that the pace of international bowling is too high for reaction times to explain batter success. Batters use subconscious cues and visual triggers to anticipate where the ball is going to be bowled.

  • Are there any common injury risks associated with replicating Bumrah’s bowling action, and how can they be minimized?
  • Is Bumrah’s action sustainable for a long career, or will it lead to early burnout like some other unorthodox bowlers?
Fast bowling is inherently unsustainable. It's 99% a survivorship bias study, I don't think we understand the biomechanics nearly well enough to conclude that unorthodox actions are more injury prone than more biomechanically optimal or aesthetic ones.

The only things we're fairly confident about:
  • Smoothly taper workload up and down, have planned larger breaks as tendon/bone heal slower than muscle.
  • Expose young bowlers to a variety of conditions (pitch hardness, heat/cold) in a controlled manner.
  • They don't need to be bodybuilders but a small dose of strength training goes a long way.
  • Cardio. Injury probability (in general, not just for cricket) goes up proportional to general fatigue. A fast bowler should never let cardiovascular fitness be a limiting factor.
  • Long term contracts. If you stop looking after them while they're injured you're going to lose out on a lot of talent. Australia paid Cummins to bum around for four years without getting a single ball from him, and that's paid off pretty well you'd have to say.
  • Do you think young bowlers should try to copy Bumrah’s action, or is it too unique to replicate effectively?
I don't think young bowlers should "copy" Bumrah specifically, but I think youngsters should be encouraged to experiment more than they currently are in most cricketing environments.
 

yorker555

Cricket Spectator
Welcome, hopefully you stick around. Best place on the net to discuss cricket.



His wrist, elbow, and arm length relative to his height. He has an enormous range of motion in his wrist and a freakish level of hyperextension in his elbow which allows him to generate an enormous amount of pace from the end of action "snap", like a human trebuchet.

While his action looks extremely odd, in his delivery stride (which is the part that matters) he gets in a mostly orthodox position. Braced front leg, good chest drive, strong front arm.



He releases the ball from significantly closer to the batsman than more orthodox bowlers. It's well established that the pace of international bowling is too high for reaction times to explain batter success. Batters use subconscious cues and visual triggers to anticipate where the ball is going to be bowled.



Fast bowling is inherently unsustainable. It's 99% a survivorship bias study, I don't think we understand the biomechanics nearly well enough to conclude that unorthodox actions are more injury prone than more biomechanically optimal or aesthetic ones.

The only things we're fairly confident about:
  • Smoothly taper workload up and down, have planned larger breaks as tendon/bone heal slower than muscle.
  • Expose young bowlers to a variety of conditions (pitch hardness, heat/cold) in a controlled manner.
  • They don't need to be bodybuilders but a small dose of strength training goes a long way.
  • Cardio. Injury probability (in general, not just for cricket) goes up proportional to general fatigue. A fast bowler should never let cardiovascular fitness be a limiting factor.
  • Long term contracts. If you stop looking after them while they're injured you're going to lose out on a lot of talent. Australia paid Cummins to bum around for four years without getting a single ball from him, and that's paid off pretty well you'd have to say.


I don't think young bowlers should "copy" Bumrah specifically, but I think youngsters should be encouraged to experiment more than they currently are in most cricketing environments.
Thank you so much for your feedback, I will definitely incorporate this into my project! This will also help me on the field.
 

sayon basak

International Captain
Hello everybody, this is my first time on this forum.
I am doing a research project for my class and I have chosen the topic of bowling like Jasprit Bumrah. I have recently started to get into cricket and a player who particularly caught my eye was Bumrah and his unorthodox style of bowling. For this project, I needed perspective and feedback from experts in the sport and/or enthusiasts and I was hoping to find some on forums such as these. I have a couple of questions and I would be grateful to anyone who can give me an answer to use for my project.


Technical & Biomechanics-Based Questions
  1. What are the key biomechanical factors that make Jasprit Bumrah’s bowling action effective despite being unorthodox?
  2. How does Bumrah generate pace and bounce with such a short run-up, and how does that compare to traditional fast bowlers?
  3. Are there any common injury risks associated with replicating Bumrah’s bowling action, and how can they be minimized?
  4. Does Bumrah’s hyperextension help or hinder his accuracy and speed in the long run?
  5. How does Bumrah’s release point and arm path compare to bowlers like Pat Cummins or Dale Steyn?
  6. Is Bumrah’s action sustainable for a long career, or will it lead to early burnout like some other unorthodox bowlers?
  7. Do you think young bowlers should try to copy Bumrah’s action, or is it too unique to replicate effectively?
Any answers, feedback, and perspectives would be much appreciated.
Thank you
I think the most important part of his action is his release point.

Jasprit Bumrah's release point is 48 cm forward from his front foot contact, while Siraj's is around 7cm (which, I'm assuming is average)
So, for a 140 kmph delivery (the ball doesn't actually travel the whole path at a constant speed, but you get the point), reaction time facing the reaction time while facing Siraj would be (20.12-0.07)/38.89=0.5156 sec.
and for Bumrah, reaction time would be (20.12-0.34)/38.89=0.5050 sec.
that difference might seem tiny, but Bumrah gets 4/5 kmph advantage for that delayed release point, which may and does surprise the batsman.
Screenshot 2025-02-27 173603.png
 

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