Tuesday, December 16, 2025

John Kerker and the potential uses for the side block

  

Some video of John Kerker at a clinic in Chicopee Mass. Back in 2011.

 

These videos show a range of the potential in side blocks, which also could be applied to other blocks.

 

Rolling side Block into a Head Strike

 


 

Seisan side block rolling into a shoulder strike

 




Side block variations

 



How the side block becomes a stack in transition
 

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Just a few short useful potentials you might choose to use.

 

John, as Sherman Harill's senior student, exemplifies what Sherman accomplished.

 

If you look you can find some of the principles I got from Sherman.

 

For example the use of the retracting hand to chamber as a slashing strike to the head or the other arm striking. But John shows how greater fluidity in execution adds another dimension.

 

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