Mastroeni, 44, joins RSL’s staff after one season as an assistant coach with Houston Dynamo FC on the staff of Tab Ramos. The five-time MLS All-Star played 16 seasons in Major League Soccer with the Miami Fusion, Colorado Rapids, and LA Galaxy and served as Head Coach of the Rapids from 2014-2017. During his playing career, the two-time World Cup participant spent 11 seasons with Colorado and captained the Rapids to the 2010 MLS Cup title. He ranks 25th in the all-time MLS record books with 334 career regular-season appearances.
After retiring, Mastroeni took the reins as Head Coach of the Colorado Rapids in 2014. In 136 games at the helm, he held a 43-58-35 record and coached his squad to the club’s all-time best regular-season finish, earning a franchise-record 58 points in 2016, finishing second in the Western Conference at 15-6-13 and advancing to the Western Conference Finals.
In addition to Mastroeni’s extensive background in MLS, the new assistant coach brings a wealth of international experience, earning 65 caps with the United States National Team from 2001-2008. As part of the National Team, he helped win the CONCACAF Gold Cup in 2002, 2005, and 2007 and was named to the FIFA World Cup roster in 2002 and 2006, helping the U.S. advance to the quarterfinals in 2002.
An Arizona native, Mastroeni played collegiately at North Carolina State University. He holds a U.S. Soccer Federation PRO License, graduating from the program in 2016.