Marc Lammers was the coach for the Dutch national women’s field hockey team. He led the team that won the silver medal at the Olympic Games in Athens in 2004 and the gold medal at the 2008 Olympic Games in Beijing. After the Olympic Games in Beijing, Lammers stepped down as coach to the national team. As a player he took part in five international competitions for the Dutch national men’s field hockey team. Lammers played for 16 years in the Dutch Major League for the Oranje Zwart Club and ‘s-Hertogenbosch Hockey Club.

After several years as coach to various youth teams at the end of the Nineties, Lammers was appointed assistant to Tom van ‘t Hek for the Dutch national women’s field hockey team. A few months before the Women’s Field Hockey World Cup 1998, that was played in Utrecht, Lammers was appointed as coach to the Spanish national women’s field hockey team that won fourth place at the Olympic Games in Sydney, Australia in 2000. Two months later he was appointed head coach of the Dutch national women’s field hockey team.

In 2012 Marc became coach to the Belgian national men’s field hockey team that reached second place in the European Hockey Championship and fifth place in the World Championship in 2013. In July 2014 Lammers announced that he would be stepping down as coach to the Belgian national men’s field hockey team, for personal reasons, and he also let it be known that he would be retiring as a field hockey coach.