Undrafted, Fiddler played in the Western Hockey League with the Kelowna Rockets and the Medicine Hat Tigers before turning pro in 2001.

As a free agent, Fiddler played the 2001–02 season with the Roanoke Express of the ECHL and the Norfolk Admirals of the American Hockey League.

[7] On July 1, 2016, after five seasons with the Stars, Fiddler signed a one-year $1.25 million free agent contract with the New Jersey Devils.

Having contributed just 3 points in 39 games, he was traded by the Devils, back to the Predators in exchange for a 4th-round pick in the 2017 draft on February 4, 2017.

[17] In 2015, Fiddler was voted by his teammates as their nominee for the National Hockey League's King Clancy Memorial Trophy.

The annual award goes to the player "who best exemplifies leadership qualities on and off the ice and has made a noteworthy humanitarian contribution in his community.

He and his team raised over $167,000 in a ten-week period for blood cancer research and patient services in memory of his sister, Erin Dionne Fiddler.

[19][20][21] Fiddler is a member of the Métis Museum along with current and former NHL players Arron Asham, Rene Bourque, Brad Chartrand, Ronald Delorme, Magnus Flett, Roderick Flett, Dwight King, Vic Mercredi, Richard Pilon, Wade Redden, Sheldon Souray, and Francis St.

He is married to Chrissy Fiddler and the couple has two children, son Blake, born July 2007 in Nashville,[10] and daughter Bella.