Jan Marcus Posthuma (born 11 June 1963 in Dokkum

Dokkum

Dokkum is a Dutch fortified town in the municipality of Dongeradeel in the province of Friesland. It has 13,145 inhabitants . The fortifications of Dokkum are well preserved and are known as the bolwerken . - History :...

, Friesland

Friesland

Friesland is a province in the north of the Netherlands and part of the ancient region of Frisia.Until the end of 1996, the province bore Friesland as its official name. In 1997 this Dutch name lost its official status to the Frisian Fryslân...

) is a retired volleyball

Volleyball

Volleyball is a team sport in which two teams of six players are separated by a net. Each team tries to score points by grounding a ball on the other team's court under organized rules.The complete rules are extensive...

 player from the Netherlands

Netherlands

The Netherlands is a constituent country of the Kingdom of the Netherlands, located mainly in North-West Europe and with several islands in the Caribbean. Mainland Netherlands borders the North Sea to the north and west, Belgium to the south, and Germany to the east, and shares maritime borders...

, who represented his native country in three consecutive Summer Olympics, starting in 1988

Volleyball at the 1988 Summer Olympics

Volleyball at the 1988 Summer Olympics was represented by two events: men's team and women's team.-Medal table:-Medal summary:-References:*...

 in Seoul, South Korea.

After having won the silver medal in 1992, Posthuma won the gold medal in Atlanta, Georgia

Atlanta, Georgia

Atlanta is the capital and most populous city in the U.S. state of Georgia. According to the 2010 census, Atlanta's population is 420,003. Atlanta is the cultural and economic center of the Atlanta metropolitan area, which is home to 5,268,860 people and is the ninth largest metropolitan area in...

 (1996) with the Dutch Men's Volleyball National Team by defeating Italy

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

in the final (3-2).