Mutiny.[5] and was named MLS Executive of the Year in 1999. New York MetroStars In 2000, he left to become President and General Manager of the MetroStars and won a second consecutive MLS executive of the year after the MetroStars finished atop the Eastern Division in the regular season. Over five seasons the MetroStars appeared in the 2003 U.S. Open Cup final and qualified for the MLS playoffs four times, but only won one playoff series. The team improved their sponsorship revenue and local broadcasting contracts under his management. Sakiewicz helped engineer the deal the build a soccer-specific stadium, Red Bull Arena. During the 2005 season, Sakiewicz was promoted to President of AEG New York, LLC, where he oversaw the record-breaking $100 million sale of the MetroStars to Red Bull Energy Drink Company in 2006. In November 2007 he left AEG to become the co-founder and CEO of the Philadelphia Union, which were announced as the 16th MLS franchise in February 2008 and began play in 2010. Philadelphia Union Sakiewicz led all efforts in planning and construction of the Union's soccer-specific stadium PPL Park, including securing naming rights and other key sponsorships. On October 2, 2015, Sakiewicz was removed from his duties as CEO and Operating Partner of the Philadelphia Union. Majority owner Jay Sugarman cited a difference in philosophy regarding the management of the franchise as the reason for his dismissal. Sakiewicz had also developed a contentious relationship with fans and the local media. In May 2015 he was the target of a protest by Philadelphia Union fans at PPL Park. Following his dismissal, allegations arose that Sakiewicz had threatened members of the local media with libel suits for their reporting on the franchise. On January 7, 2016, Sakiewicz was introduced as the fifth commissioner in the history of the National Lacrosse League. National Lacrosse League Since taking over as commissioner, Sakiewicz has partnered with Twitter to live stream select games, increased ticket sales and led the way in launching NLL TV. In March 2018, Sakiewicz secured the largest media rights deal in the history of the league, partnering with B/R Live, Turner's live streaming service, for all games to be streamed on the platform starting with the 2018-2019 season. Under Sakiewicz' watch, the league has seen attendance growth for three consecutive years and games routinely average 10,000 fans per game. Sakiewicz' biggest impact has come with league expansion.