Career
He is under contract with the Krefeld Pinguine of the Deutsche Eishockey Liga (DEL) in Germany. Mancari was drafted by the Buffalo Sabres in the seventh round (207th overall) of the 2004 National Hockey League Entry Draft. After playing four seasons in the Ontario Hockey League with the Ottawa 67"s, Mancari made his professional debut with the Sabres" American Hockey League affiliate, the Rochester Americans, in the 2005-2006 season.
He played in 71 games and recorded 42 points.
He made his National Hockey League debut with the Buffalo Sabres in the 2006-2007 season, recording one assist in three games. He currently holds the AHL"s hardest-shot record, with a speed of 102.8 mph in the 2008 AHL All-Star Classic Skills Competition.
Mancari was called up from Portland on November 21, 2008. The next day, he scored his first National Hockey League goal against the New York Islanders.
He was reassigned to the AHL on December 7, 2008 and named to the 2009 AHL Canadian All-Star team on January 6, 2009.
Mancari began the 2010-2011 National Hockey League season in Portland where he played 23 games for the Pirates before being recalled to the National Hockey League to suit up for the Sabres on December 7, 2010. Mancari assisted on one goal in the away game against the Boston Bruins. He signed a one-year contract worth $525,000 with the Vancouver Canucks on July 1, 2011.
After one season in the Canucks" organization he returned to the Sabres, signing a one-year contract.
On July 5, 2013, Mancari again left the Sabres organization and signed a one-year, two-way deal with the Saint Louis Blues. On March 2, 2014, Mancari was traded to the Florida Panthers in return for Eric Selleck.
He was assigned to AHL affiliate, the San Antonio Rampage where he would later secure an AHL contract for the following 2014-2015 season. On July 17, 2015, Mancari embarked on a European career, joining German club, Augsburger Panther of the Deutsche Eishockey Liga (DEL) on a one-year deal.
In March 2016, Mancari inked a two-year deal with fellow DEL side Krefeld Pinguine.