The Chicago Shamrox were a professional lacrosse team that played in the National Lacrosse League (NLL) in the 2007 and 2008 NLL seasons. Home matches were played at the Sears Centre in northwest suburban Hoffman Estates, Illinois. The team's ownership group was headed by Kevin Loughery Jr., the son of former NBA head coach Kevin Loughery. The new franchise was announced on February 16, 2006,
During their inaugural season in 2007, the Shamrox finished the season 6-10 and tied for fourth place in the NLL East Division with the Toronto Rock and Philadelphia Wings. But, due to their record inside the division, the Shamrox lost the playoff tiebreaker to the Rock and missed the playoffs.
On December 12, 2008, the Chicago Shamrox franchise closed their doors indefinitely. For the weeks and months before, owner Kevin Loughery Jr. had been trying to find a new ownership group. When the new group wasn't found, the team ceased operations 15 days before the opening night against the Rochester Knighthawks The team suspended operations until further notice.
May 11, 2006: Connie Kowal was announced as the team's first president and Phil Ryan was named Vice President of Lacrosse Operations.
June 1, 2006: Jamie Batley was named the first Head Coach and General Manager in Chicago Shamrox history.