|Date of birth||May 28, 1979|
|Place of birth||Carson City, Nevada, United States|
|Height||5 ft 10 in (1.78 m)|
|2002–2003||→ Richmond Kickers (loan)||14||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 15 July 2010.
‡ National team caps and goals correct as of 15 July 2010
College and amateur
Namoff grew up in Rockford, Illinois, where he emerged as a soccer standout at Boylan High School. He played college soccer at Bradley University from 1997 to 2000, where he was a first-team All-Missouri Valley Conference selection in 1999 and 2000, and scored a total of 32 goals and 17 assists while with the team. In 2000, he played for the Rockford Raptors in the USL Premier Development League.
Following his graduation, Namoff was selected 15th overall by D.C. United's then-coach Thomas Rongen in the 2001 MLS SuperDraft. Namoff made a significant impact as a rookie, registering seven assists in only 15 games while playing in the midfield. However, a change of coaches in the offseason brought Ray Hudson to the team, and Namoff's time was significantly curtailed. He appeared in only 11 games in 2002, and spent much of the season on loan with the Richmond Kickers in the USL First Division.
In 2003, Namoff began seeing more playing time for United at right back, appearing in 22 games and registering one assist. In 2004, Namoff locked down the right back position, starting 27 games for the team, scoring two assists. Namoff has continued to be first choice on the right side of United's back line ever since. As of the 2006 season, he has also been playing as a midfielder.
In July 2010, Namoff announced he was suspending his playing career after failing to recover from serious concussion.
Along with teammates Bobby Boswell, Brian Carroll, and Joshua Gros, Namoff made his first (and, to date, only) international appearance for the United States men's national soccer team on January 20, 2007, against Denmark.
- Major League Soccer MLS Cup (1): 2004
- Major League Soccer Supporter's Shield (2): 2006, 2007
- Lamar Hunt U.S. Open Cup (1): 2008