At the 2008 Summer Olympics in Beijing she won an Olympic gold medal with the Dutch national team, beating China in the final 2–0.[1] Polkamp was also a gold medallist in the 2012 London Olympic Games, where the Netherlands beat Argentina, also 2–0.[1] She announced her retirement from international competition on 3 June 2013, shortly after the AHBC had been Dutch champions.
Personal life
Polkamp is in a relationship with former Dutch field hockey international Robbert Kemperman.[2]