We all see that these two goalies are not performing well in the movement of stopping the low shot.
It is more obvious that they do not go far enough to reach the corner of the goal and that is common to both. We all see this fact through finishing the ball in the goal in case the goalie anticipates in which corner the ball will go.
Slightly more experienced coaches see that they both do not lower their hips enough to successfully stop low shots.
Some of us can see it during the match, some of us see it when performing exercises in which the movement is repeated, and some of us see it in slow motion.
Even more experienced coaches see that one goalie tries to compensate for the lack of lateral stride, ie insufficient lowering of the hips, by bending the torso to reach with the palm of the hand the area where the low shot is expected to arrive.
Why these two goalies can’t lower their hips enough is explained here, and insufficient quality of the biomechanics of movement leads to various consequences.
They can range from lack of efficiency in matches (goalkeeper cannot defend shots in the bottom corner of the goal), through failure to realize personal potential (talented goalie performs on average level), to current or permanent health problems (from back pain to permanent structural changes in the hip or lumbar joints of the spine).
In order to help the goalie in time, it is necessary to constantly monitor him and when we notice shortcomings in performing the movement, help him.
The first step is to measure the abilities to find out if the poor performance of the movement was due to poor mastery of the biomechanics of the goalkeeping movement or insufficiently developed abilities that limit the performance of that movement.