WTA Tier IV tournaments
The WTA Tier IV tournaments were Women's Tennis Association tennis fourth-level tournaments held from 1990 until the end of the 2008 season. The line-up of events varied over the years, with tournaments being promoted, demoted or cancelled. Some of the tournaments became Tier V events between 1990 and 1992 and later from 2001 to 2005 before being integrated back into Tier IV.
|Tournament||Also currently known as||City(s)||Country A||Court surface||Tier IV in||Years|
|Puerto Rico Open||Honda Classic||San Juan (1991–1993)
|Kansas||Avon Championships of Kansas||Wichita, KS||United States||Hard||1990||1|
|Albuquerque||Virginia Slims of Albuquerque||Albuquerque, NM||United States||Hard||1990–1991||2|