As a youth, Leclaire played in the 1996 Quebec International Pee-Wee Hockey Tournament with the Rive-Nord Elites minor ice hockey team. Leclaire played junior hockey in the Quebec Major Junior Hockey League for the Halifax Mooseheads and the Montreal Rocket between 1998 and 2002. Leclaire was the first goaltender selected in the 2001 NHL Entry Draft, chosen eighth overall by the Blue Jackets. He subsequently bounced back and forth between Columbus and their AHL affiliate, the Syracuse Crunch, from 2002 to 2005 before finally sticking with the Blue Jackets for good in 2006, serving as a backup to Marc Denis. On June 30, 2006, Denis was traded to the Tampa Bay Lightning and Leclaire was promoted to starting goalie. However, during the season, Leclaire suffered from a leg injury and backup goaltenderFredrik Norrena took over and eventually played 55 games out of 82. In 2007–08, Leclaire had an outstanding season and regained the number one job. He set new team records with nine shutouts, ranked second in the NHL in goals against average, and third in save percentage. Leclaire finished second in fan voting among Western Conference goaltenders for the 56th NHL All-Star Game, but was not named to the final team. In the 2008–09 season, Leclaire injured his ankle, sidelining him for the season and the Blue Jackets promoted rookie Steve Mason. Mason's play was outstanding, leading the Western Conference in several categories. In a playoff race, the Blue Jackets traded Leclaire to the Ottawa Senators, along with a second-round pick in 2009, in exchange for Antoine Vermette on deadline day March 4, 2009. As expected, Leclaire assumed the role of starting goaltender with the Senators in 2009–10, once he had fully recovered from ankle surgery. However, Leclaire would finish the season backing upBrian Elliott in the Ottawa net, due to inconsistent play and injuries - including a broken cheekbone suffered from being hit by an errant puck while sitting on the bench during a game. The inconsistency and injuries worsened considerably in 2010–11 with Leclaire playing 14 NHL games and the Senators finishing the year with a top-2 tandem of goaltenders other than those who started the season with the team. During the season he underwent hip surgery. As the 2011-12 NHL season began, Leclaire remained unsigned as an unrestricted free agent. He would ultimately sit out the entire season, unable to come to terms on a contract with any team. On November 12, 2012, on the Reseau des sports program L'Antichambre, Leclaire announced his retirement from hockey. He had undergone three operations on his right hip, from which he was not able to recover.
