Los Angeles Dodgers pitcher Bobby Miller was placed in the concussion protocol on Thursday after being struck in the head by ...

A concussion is a mild traumatic brain injury caused by a sudden hit, jolt, or impact on the head or body, leading to rapid movement of the brain inside the skull.

Jan 30 (Reuters) - Player concussions dropped 17% this season ... defined by two players colliding at more than 15 miles per hour (24 kph), and changes to the rules on punting plays could be ...