As of June 2015, the top two men in professional curling are Brad Jacobs and Mike McEwen, and the top two females are Jennifer Jones and Eve Muirhead. The rankings are decided by a season-long scoring system called The Order of Merit.
Jacobs grew up in a curling family, and is currently a member of the Canadian Olympic team. He is a 2014 Olympic gold medalist. McEwen was also introduced to the sport at a young age and won the 2011 Canadian Open Grand Slam. Jones also took gold for Canada in the 2014 Winter Olympics, and Muirhead is a skip for Team GB and winner of the 2013 World Championships.