The WTA Tier IV tournaments were Women's Tennis Association

Women's Tennis Association

The Women's Tennis Association , founded in 1973 by Billie Jean King, is the principal organizing body of Women's Professional Tennis. It governs the WTA Tour which is the worldwide professional tennis tour for women. Its counterpart organization in the men's professional game is the Association of...

 tennis

Tennis

Tennis is a sport usually played between two players or between two teams of two players each . Each player uses a racket that is strung to strike a hollow rubber ball covered with felt over a net into the opponent's court. Tennis is an Olympic sport and is played at all levels of society at all...

 fourth-level tournaments held from 1988 until 2008 season. The line-up of events varied over the years, with tournaments being promoted, demoted or cancelled. The series resulted from a reform of the WTA tour in 1988, offering more prize money for winners. Some of the tournaments became Tier V events between 1988 and 1992 and later from 2001 to 2005 before being integrated back into Tier IV.

From 2009 WTA Tour

2009 WTA Tour

The 2009 Sony Ericsson WTA Tour was the 37th season since the founding of the Women's Tennis Association. It commenced on January 5, 2009, and concluded on November 8, 2009 after 56 events....

, WTA changed the tournament categories, so that most of the Tier III and Tier IV tournaments from 2008 were in one category, WTA International tournaments

WTA International tournaments

The International Tournaments is the new category for tennis tournaments of Women's Tennis Association from the 2009 WTA Tour. Tournaments are replacing Tier III and Tier IV events...

.

Events

Tournament	Also currently known as	City(s)	Country	Court surface	Tier IV from	Years
Rome	Internazionali BNL d'Italia	Rome Rome Rome is the capital of Italy and the country's largest and most populated city and comune, with over 2.7 million residents in . The city is located in the central-western portion of the Italian Peninsula, on the Tiber River within the Lazio region of Italy.Rome's history spans two and a half...		Clay	1988	1
Zurich Zurich Open The Zurich Open was a WTA Tour affiliated professional tennis tournament for women, formerly held every winter in Zurich, Switzerland. It was classified on the WTA Tour as a Tier I tournament from 1993 until 2007. In its final year, 2008, it was downgraded to a Tier II event.The Open was held at...		Zurich Zürich Zurich is the largest city in Switzerland and the capital of the canton of Zurich. It is located in central Switzerland at the northwestern tip of Lake Zurich...		Hard (i)	1988	1
Hamburg		Hamburg Hamburg -History:The first historic name for the city was, according to Claudius Ptolemy's reports, Treva.But the city takes its modern name, Hamburg, from the first permanent building on the site, a castle whose construction was ordered by the Emperor Charlemagne in AD 808...		Clay	1988–1989	2
New Jersey WTA New Jersey The WTA New Jersey is a defunct WTA Tour affiliated tennis tournament played from 1978 to 1989. It was held in Mahwah, New Jersey in the United States and played on outdoor hard courts....		Mahwah Mahwah Mahwah may refer to the following in the U.S. state of New Jersey:*Mahwah River, a tributary of the Ramapo River*Mahwah, New Jersey, a township in Bergen County**Mahwah Township Public Schools, a school district in the above township... , NJ New Jersey New Jersey is a state in the Northeastern and Middle Atlantic regions of the United States. , its population was 8,791,894. It is bordered on the north and east by the state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania and on the southwest by Delaware...		Hard	1988–1989	2
Newport		Newport Newport, Rhode Island Newport is a city on Aquidneck Island in Newport County, Rhode Island, United States, about south of Providence. Known as a New England summer resort and for the famous Newport Mansions, it is the home of Salve Regina University and Naval Station Newport which houses the United States Naval War... , RI Rhode Island The state of Rhode Island and Providence Plantations, more commonly referred to as Rhode Island , is a state in the New England region of the United States. It is the smallest U.S. state by area...		Clay	1988–1989	2
San Antonio Pilot Pen Tennis This article is about the former New Haven joint tennis event. It is now a women's-only event. For the New Haven men's tennis event known as Volvo International , click here....	Pilot Pen Tennis	San Antonio, TX Texas Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...		Hard	1988–1989	2
San Diego	San Diego Open	San Diego, CA California California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...		Hard	1988–1989	2
Sydney	Medibank International Sydney	Sydney Sydney Sydney is the most populous city in Australia and the state capital of New South Wales. Sydney is located on Australia's south-east coast of the Tasman Sea. As of June 2010, the greater metropolitan area had an approximate population of 4.6 million people...		Grass (1988) Hard (1989)	1988–1989	2
Tampa Eckerd Open The Eckerd Open is a defunct WTA Tour affiliated tennis tournament played from 1971 to 1990. It was held in St. Petersburg, Florida in the United States from 1971 to 1974, Palm Harbor, Florida in the United States in 1977, in Clearwater, Florida in the United States in 1978 and in Tampa, Florida in...		Tampa Tampa, Florida Tampa is a city in the U.S. state of Florida. It serves as the county seat for Hillsborough County. Tampa is located on the west coast of Florida. The population of Tampa in 2010 was 335,709.... , FL Florida Florida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...		Clay	1988–1989	2
Puerto Rico Open Puerto Rico Open (tennis) The Puerto Rico Open is a defunct tennis tournament. The first edition dates back to 1971 but only from 1986 to 1993 was the tournament played every year. It was held in San Juan, Puerto Rico and was played on outdoor hard courts. In 1988, when Tier categories were first introduced on the WTA Tour,...		San Juan San Juan, Puerto Rico San Juan , officially Municipio de la Ciudad Capital San Juan Bautista , is the capital and most populous municipality in Puerto Rico, an unincorporated territory of the United States. As of the 2010 census, it had a population of 395,326 making it the 46th-largest city under the jurisdiction of...  (1988–1989, 1991–1993) Dorado Dorado, Puerto Rico Dorado is a small tourist town in the northern coast of Puerto Rico, west of San Juan and is located in the northern region of the island, bordering the Atlantic Ocean, north of Toa Alta, east of Vega Alta, and west of Toa Baja. Dorado is spread over five barrios and Dorado Pueblo...  (1990)		Hard	1988–1993	6
Kansas VS of Kansas The VS of Kansas is a defunct WTA Tour affiliated tennis tournament played from 1978 to 1990. It was held in Kansas City, Kansas in the United States from 1978 to 1983 and in Wichita, Kansas in the United States from 1986 to 1990 and was played on indoor hard courts in 1978 and from 1988 to 1990,...		Wichita Wichita, Kansas Wichita is the largest city in the U.S. state of Kansas.As of the 2010 census, the city population was 382,368. Located in south-central Kansas on the Arkansas River, Wichita is the county seat of Sedgwick County and the principal city of the Wichita metropolitan area... , KS Kansas Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south...		Hard	1990	1
Albuquerque VS of Albuquerque The Virginia Slims of Albuquerque is a defunct WTA Tour affiliated tennis tournament played from 1989 to 1991. It was held in Albuquerque, New Mexico in the United States and played on outdoor hard courts.-Singles:-Doubles:-References:*...		Albuquerque, NM New Mexico New Mexico is a state located in the southwest and western regions of the United States. New Mexico is also usually considered one of the Mountain States. With a population density of 16 per square mile, New Mexico is the sixth-most sparsely inhabited U.S...		Hard	1990–1991	1