Rather than attempt to offer an exhaustive review of the subject here, this section will only offer suggestions and a review of frequently asked questions. Stretching, like all physical activity, should be approached with an appropriate amount of care and understanding of the individual problems that a player may have.
Some children have medical conditions or anatomic problems that prevent certain stretches.
Additionally, some coaches like to stretch with the team prior to demonstrating activities. It is very important that the coaches warmup and stretch properly since their risk of injury is greater, in general, than the youngsters they are coaching. As a rule of thumb, if there is marked pain associated with a stretch, you should back off and either try an alternate stretch or decrease the degree of stretch. The easy answer is everyone but, of course, easy isn't always correct. Most young, pre-pubertal children have enough flexibility that it is debatable whether stretching is effective or useful.