Ralph Kok
Ralph Kok is a former professional tennis player from the Netherlands.
Career
Kok and partner Christian Bergström made the doubles quarter-finals of the 1989 ABN World Tennis Tournament in Rotterdam. He reached the second round of the singles at the same tournament in 1993, having a win over world number 68 Patrik Kühnen.The Dutchman was beaten by Dan Goldie in the opening round of the 1990 Wimbledon Championships.
He now coaches Arantxa Rus and Anastasiya Yakimova.