Coaching Staff

Dave Kasper

General Manager

Dave Kasper joined D.C. United in 2002 after a stint with the New England Revolution where he served as the director of business development. After five years as United’s technical director, he was named the club’s general manager in September 2007.

Under his watch, United captured the 2004 MLS Cup, two Supporters’ Shields (2006 & 2007) and the 2008 U.S. Open Cup title.

As the team’s GM, Kasper works closely with the coaching staff in identifying and signing talent, developing a draft strategy, creating closer ties to foreign club teams, and managing all player transactions. He also oversees the direction of the club’s youth development efforts including the D.C. United Academy and the Super Y-League program. Kasper has a wide variety of soccer experience as a player, coach and front office executive.

During his playing career, Kasper was a standout forward at the University of Maryland, earning All-ACC honors while also serving as a member of the U.S. Under-20 National Team. He played professionally for the Milwaukee Wave (1989-90) and the Pittsburgh Stingers (1990-94) and transitioned into the first men’s head soccer coach for Duquesne University in 1994. In 1998, Kasper was hired as the first vice-president and general manager of the Pittsburgh Riverhounds (USL-1). The following year, Kasper led the organization to the playoffs and to “Organization of the Year” honors.

Kasper is actively involved in the Leukemia Society’s successful “Kicks for Cancer” program. He lives in Ashburn with his wife Lizzethe and daughter Alexandra.

Curt Onalfo

Head Coach

Curt Onalfo was named as D.C. United's head coach on December 28, 2009. He is the sixth head coach in club history and has long-standing ties, having previously served the team as a player, director of youth development, and assistant coach.

Onalfo was most recently the head coach of the Kansas City Wizards. When he was hired prior to the 2007 MLS season, he took over a Wizards team that had not made the post-season in the team’s prior two campaigns (2005 and 2006). In his first season as the team’s skipper, he not only led Kansas City back to the post-season, but into the Eastern Conference Final. Onalfo then guided the team into the MLS Cup playoffs for a second consecutive year in 2008. During his two and a half seasons in Kansas City, Onalfo had a career record of 27-29-22, making the playoffs each of the full seasons he served as the team’s head coach.

Prior to his time in Kansas City, Onalfo spent four years (2003-06) as Bruce Arena’s assistant coach on the U.S. Men’s National Team. During his time with the U.S., the national team put together a record of 38-12-14 in all competitions. While at his post, the team was a semifinalist at the 2003 Gold Cup, and finished atop CONCACAF in 2006 FIFA World Cup qualification. Onalfo was with the team throughout the 2006 FIFA World Cup in Germany, which included former United midfielder Ben Olsen as a member. He also served as an assistant to head coach Glenn ‘Mooch’ Myernick during Olympic qualifying for 2004 Athens.

From 1998-2002, Onalfo was a member of D.C. United, first as a player (1998-99) and then as an Assistant Coach and Director of Youth Development (2000-02). He first joined the team in 1998 under Bruce Arena and then played the 1999 season under Thomas Rongen. While with the team, he captured four trophies – the 1998 CONCACAF Champions Cup, 1998 InterAmerican Cup, 1999 Supporters’ Shield and 1999 MLS Cup. After retiring at the end of the ’99 season, he joined Rongen’s staff as an assistant coach for the 2000 campaign. In 2001, Rongen and Onalfo together launched United’s youth academy program. Under Onalfo’s guidance, the club’s U-15 side won a national championship in its very first year of competition. In 2002, when Ray Hudson was hired as the team’s new head coach, Onalfo stayed on as an assistant for the duration of the campaign.

Onalfo began his MLS playing career during the League’s inaugural year as a member of the LA Galaxy, before moving to the San Jose Clash for the 1997 campaign. Prior to his time in MLS, Onalfo also played professionally in Mexico (Tampico FC, 1995-96), in the U.S.-based A-League (CT Wolves, 1994-95) and in France (FC LA Ciotat, 1991-92).

Onalfo also saw significant time representing the U.S. as a player. From 1987-1992, he played in over 100 games combined as a member of the U.S. Olympic team, the U.S. youth national teams and the full U.S. National Team. In 1992, he was named as a co-captain for the U.S. Olympic team that competed in Barcelona, Spain. In 1989, he served as a co-captain for the U.S. U-20 team, helping them to a fourth place finish at the U-20 World Championships in Saudi Arabia. At 18-years old, Onalfo earned a cap with the full U.S. Men’s National Team when he played in the U.S.’s 1-0 win over Costa Rica on June 14, 1988.

Onalfo spent his collegiate career at the University of Virginia, where he first teamed-up with coach Bruce Arena. In 1989, the Cavaliers shared the NCAA title with Santa Clara, battling to a 1-1 draw after sudden-death overtime. Onalfo, a central defender, earned All-ACC honors as a junior and senior.

At Ridgefield High in Ridgefield, Connecticut, Onalfo played on two state championship teams and was named as a High School All-American in 1987. He also won two conference titles and helped the Tigers reach the state finals, scoring 28 goals during his senior season.

Onalfo’s ties to the DC area are not limited to his time with United. In 1998, he launched Curt Onalfo Soccer in McLean, Virginia. Thousands of Washington-area youth were involved with the training and summer camp programs overseen by Onalfo. He also served as the Technical Director for McLean Youth Soccer.

Born on November 19, 1969 in Sao Paulo, Brazil, Onalfo is a cancer survivor, having undergone treatment for non-Hodgkins Lymphoma. He and his wife Sandra have two children – Christian (12) and Gabriela (8).

Kris Kelderman

Assistant Coach

Kris Kelderman joined United’s coaching staff as an assistant under Curt Onalfo prior to the 2010 season. He had previously teamed-up with Onalfo at the Kansas City Wizards, serving as an assistant coach for two and a half seasons. He helped lead the Wizards to the MLS Cup playoffs in each of his seasons there. Before joining Kansas City, Kelderman was an assistant coach at George Mason University. In 2004, he served as head coach of United’s U-17 academy team and also as the technical director for the Vienna Youth Soccer Club.

As a player, he spent two seasons with D.C. United, playing in 42 regular season games (17 starts) in 1996 and 1997. He helped D.C. win the 1996 and 1997 MLS Cups and the 1996 U.S. Open Cup. After United, Kelderman spent a season each with the Miami Fusion (1998) and New England Revolution (1999). All told, he played in 81 MLS games (42 starts), totaling three goals and 14 assists. Kelderman played his collegiate career at the University of Virginia, where he won the 1989 NCAA National Championship. In 1985, he was a member of the U16 National Team that participated in the FIFA World Championships.

Ben Olsen

Assistant Coach

Olsen’s coaching career began prior to the 2010 MLS campaign as an assistant coach under Curt Onalfo. He joined the coaching ranks after announcing his retirement as a player on November 24, 2009.

As a player, Olsen was amongst the club’s all-time leaders in several key categories at the time of his retirement – second in games played (221), minutes played (17,098) and game-winning goals (13), third in assists (49) and shots on goal (155), and seventh all-time in goals (29). Arguably the most popular player in United history, the midfielder won eight total trophies while in DC, including two MLS Cups (1999 & 2004). He was a two-time All-Star (1998 & 1999), the 1998 MLS Rookie of the Year, the 1999 MLS Cup MVP, the 2003 USSF Humanitarian of the Year and was named to the MLS Best XI in 2007.

In addition to his storied career with United, Olsen also had an illustrious career with the U.S. Men’s National Team. He made his full international debut against Australia on November 6, 1998. His first goal for the U.S. came in just his second international game when he tallied against Chile on February 21, 1999. In 2000, he was part of the team that reached the bronze medal game at the Sydney Olympics before falling to Chile. Olsen was selected to the 2006 World Cup team and played 51 minutes in the team’s final match against Ghana. All told, the midfielder earned 37 caps and six goals with the U.S. Men’s National Team.

Prior to his professional career, from 1995-97, Olsen spent three seasons at the University of Virginia. During his time with the Cavaliers, the team posted a 56-8-8 record. All told, the midfielder compiled 34 goals with 41 assists and started and played every game (69) of his collegiate career. After his junior season, he was named the 1997 Soccer America Player of the Year and was a finalist for the Hermann Trophy. He was also named as the ACC Tournament MVP and selected to the NSCAA All-American first-team after his senior year.

Mark Simpson

Assistant Coach

Mark Simpson will serve D.C. United as an assistant coach for a seventh consecutive season in 2010. After joining the club’s coaching staff prior to the 2004 season under Peter Nowak, and continuing as an assistant to Tom Soehn during his three-year tenure (2007-09), Simpson continues his service to the club under Head Coach Curt Onalfo. In his six prior seasons as an assistant, United has captured the 2004 MLS Cup, the 2006 and 2007 Supporters’ Shield and the 2008 U.S Open Cup. He also helped lead the 2005 reserves to the inaugural Reserve Division championship and was an integral part in Troy Perkins’ growth, which led to him being named the 2006 MLS Goalkeeper of the Year. Additionally, Simpson was an assistant coach under Nowak as part of the 2004 and 2006 All-Star squads. He also served as the goalkeeping coach for the Black-and-Red during the 2002 MLS season under Ray Hudson.

Between his United coaching stints, Simpson served as an assistant coach with United Soccer League’s Virginia Beach Mariners, where he helped engineer an amazing turnaround. The club followed up a 6-19-3 finish in 2002 with a 14-9-5 overall record in 2003.

From his first professional game between the pipes in 1996, Simpson was a steady and sure-handed goalkeeper. He joined D.C. United in 1996 from the Cincinnati Silverbacks of the NPSL. He started 14 regular season games and then led the team to the inaugural MLS Cup championship, starting all six playoff games. In 1997, he spent time with both D.C. United and the Buffalo Blizzard. Simpson anchored the Blizzard with a 6-1 record, but suffered an injury which saw Simpson only able to play in two games for the Black-and-Red in 1998. Simpson returned for the 1999 campaign, making nine appearances (6-1 record). He was recognized with the Coaches’ Choice award in July 2000 for his performance in United victories over Rochester in U.S. Open Cup play and English Premier League side Newcastle. He called time on his playing career in 2001, finishing with 53 appearances and a 1.49 goals-against-average. Simpson’s playing honors include three MLS Cups (1996, 1997 and 1999), a U.S. Open Cup (1996), a CONCACAF Champions’ Cup (1998) and a InterAmerican Cup (1998).

In his free time, Simpson enjoys fishing and golf. He and his wife, Amanda, reside in Herndon with their two daughters, Nina and Lyla.