Marko Klok is a 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 two Summer Olympics, starting in 1992

Volleyball at the 1992 Summer Olympics

Volleyball at the 1992 Summer Olympics was represented by two events: men's team and women's team.-Medal table:-Medal summary:-References:*...

 in Barcelona, Spain. There he won the silver medal as a part of the Dutch Men's National Team, and later took ninth at the 2004 Summer Olympics

2004 Summer Olympics

The 2004 Summer Olympic Games, officially known as the Games of the XXVIII Olympiad, was a premier international multi-sport event held in Athens, Greece from August 13 to August 29, 2004 with the motto Welcome Home. 10,625 athletes competed, some 600 more than expected, accompanied by 5,501 team...

 in Athens, Greece.

In 1995, Klok and partner Michiel van der Kuip won the European beach volleyball

Beach volleyball

Beach volleyball, or sand volleyball, is an Olympic team sport played by two teams of two players on a sand court divided by a net.Like volleyball, the object of the game is to send the ball over the net in order to ground it on the opponent’s court, and to prevent the same effort by the opponent....

title.