Fenson's teammates in the 2009-10 curling season were Shawn Rojeski (third), Joe Polo (second), and Tyler George (lead). The team's lead for the past four years (including the 2006 Olympics), John Shuster, had decided in 2006 to depart from the team to form his own team. Fenson won the 2010 USA National Championships, which took place in Kalamazoo, Michigan. His victory earned him the right to play for the US at the 2010 World Championship in Cortina d'Ampezzo, where he and his rink finished 4th after two disappointing losses in the playoffs to David Smith's rink from Scotland. Tyler George soon left to form his own team.