In the letter, found on the new Play Smart, Play Safe initiative website, Goodell states that while the League has made important progress in health and safety, it strives to do even better. Determined to “let science lead the way,” Goodell announces that the League will establish an independent, scientific advisory board of leading doctors to support research on concussions and the long-term effects of head injuries. In addition, an additional $100 million pledge that will support concussion research and technological advancements. Citing recent rule changes (such as the recent kickoff rule change) that have reduced concussions, Goodell pledges to continue making changes in response to independent medical research to continually improve player health and safety. Read the full letter here.