This just in from noted race announcer Ben Cheatwood:

You had a very good article on the subject of Supercross. I would like to add some items that may be of interest to you.

The last time the AMA split from the promoters of Supercross was in 1984. There were two series in 1984, the promoters known as Insport and the AMA Series. The AMA Series consisted of a Triple Crown in Daytona, Talladega and San Jose. Daytona was a normal Daytona Supercross. Talladega attracted 1500-2000 spectators and San Jose was cancelled.

The Insport Series consisted of 11 races that were run in a two-moto main event format, scoring the riders in both motos for the overall winner.

One of the managers of the Insport group was Gary Mathers.

Thanks for the great work on the Air Fence and generating new blood for the AMA.

Ben Cheatwood