Most sports television broadcast have one play-by-play announcer and one color commentator. An example is NBC Sunday Night Football in the United States. It is called by Cris Collinsworth, a former American football receiver, and Al Michaels, a professional announcer. In the United Kingdom, there is not as much of a difference between play-by-play and color commentary. Two-man commentary teams usually have a person formal journalistic training but little or no sports experience leading the commentary, and an expert former (or current) competitor dealing with analysis. There are exceptions to this. All of the United Kingdom's major cricket and snooker commentators are former professionals in their sports. The well known Formula One racing commentator Murray Walker had no formal journalistic training and only a small amount of racing experience of his own.