October 22 in San Antonio history...

1975
The World Football League, including the San Antonio Wings, folds.  San Antonio would not have another professional football team again until 1984 - the San Antonio Gunslingers of the USFL.

1976
The Spurs make their debut as an NBA team in Philadephia against the 76ers, appropriately.  They continue their high-scoring ABA tradition, winning 121-118.