Career
Pineault was drafted 46th overall in the 2004 National Hockey League Entry Draft by the Columbus Blue Jackets. Pineault originally was a product of the United States National Development Program. He then played collegiate hockey in 2003-2004 with Boston College before moving on to the Moncton Wildcats of the QMJHL. Pineault made his professional debut in the 2006-2007 season with the Blue Jackets affiliate, Syracuse Crunch.
Pineault made his National Hockey League debut in the 2007-2008 season on April 3, 2008, against the Detroit Red Wings.
On January 10, 2009, Pineault was traded by the Blue Jackets to the Chicago Blackhawks for Michael Blunden. He was then assigned to the Rockford IceHogs of the American Hockey League for the remainder of the 2008-2009 season.
Pineault left for Europe and signed during the 2009-2010 season to trial with The Human Context in the Czechoslovakian Extraliga on November 2, 2009. After appearing in ten games with Pardubice, Pineault established himself offensively and was offered a contract to remain on the team on December 8, 2009.
Adding a physical presence and scoring 10 goals and 20 points in 31 games as a role player, Pineault was given an extended multi-year contract to stay in the Czechoslovakian Republic on May 14, 2010.
After resuming his career in North America, with a tenure in the Central Hockey League with the Allen Americans, Pineault signed a one-year contract as a free agent with the Utah Grizzlies of the ECHL on August 28, 2013. At the completion of the 2013-2014 season with the Grizzlies, after suffering from a Jaw injury for a significant portion of the year, Pineault opted to end his eight-year professional career and retire.