Age Uke

Note: age uke finishes above and in front of the head, to protect it from a downward strike. The angle of the arm helps re-direct teh strike to the side.
The technique starts with the non-blocking arm straight up in the middle of the body (left pic below). The blocking arm rises directly behind/outside it (right pic below) and when the fist reaches the final height, the elbow snaps out to complete the block.