Baseball is still very safe because it is essentially a noncontact sport. However, according to Pacheco, collisions among players are quite common. It can be a pretty big impact. Some kids have gotten concussions from that.
Players also tend to get injured sliding into a base, particularly when they slide headfirst.
In fact, most broken wrist injuries in baseball are a result of sliding headfirst. Stretching the major muscle groups before practices and games is also critical to prevent injuries. Coaches should make sure that all of the players know appropriate stretching exercises and complete them before playing.