Joe: Entry angles

This shot shows a nice vertical shin angle as the takeoff foot hits the ground.Hips are back a bit, leaving a bit of separation at the knees, but the shin angle is the key.

 Good displacement here. Hips well ahead of takeoff foot with a strong entry angle -- about 58%.

Here's Joe with an entry angle around 66%
Good when you can get the force vectors more toward the hurdle -- something closer to the 58% seen above.

Here is Joe's angle as the takeoff foot touches down. It's about 69% compared with 90% with the elite hurdler in the top image. Reducing this blocking will help improve entry speed and enhance the hip displacement that allows a more aggressive entry angle.