2009-11: Dudar joined BSC Young Boys for the start of the 2009-10 campaign. In his first season with the Swiss club, he played in Super League, Europa League (formerly known as UEFA Cup) and Champions League qualifying matches. He was named the Swiss Golden Player as the league’s defender of the year after playing in 31 Swiss League matches (all starts) that season. His second season was cut short after suffering a concussion in September, which sidelined the defender for three months. He returned to the pitch in the spring of 2011 and played in a total of 17 matches for Young Boys over the remainder of the campaign.
2008-09: Dudar began the campaign with Olimpo of Argentina’s second division, playing in 15 matches (13 starts), before moving to Bellinoza of Switzerland. He played in 16 matches (all starts) and scored two goals for the Swiss side.
2007-08: Dudar made his European debut with FC Chiasso of the Swiss Challenge League (second division), playing in 14 matches (all starts) and tallying two goals during the 2007-08 campaign.
2006-07: Dudar spent two seasons (2006-07) in Brazil as part of legendary club Vasco da Gama, making 19 appearances (17 starts) for the Rio de Janeiro side. While with Vasco, Dudar also played in the 2007 editions of Copa Sudamericana and Copa do Brazil.
2003-05: Beginning in 2003, Dudar went on loan for three consecutive years to three different clubs. In 2003, he went on loan to Independiente of Argentina’s Primera División, seeing time in 19 matches (16 starts) and tallying one goal. In 2004, Dudar was loaned to Banfield, also of Argentina’s Primera Division, and played in two matches, before moving to Libertad of Paraguay’s first division for the 2005 campaign, where he did not see the field.
1999-2003: Dudar made his professional debut at 19-years old with Vélez Sarsfield of the Argentine Primera División after climbing up the club’s youth ranks. Over four years with the Buenos Aires side, he made 63 total appearances (46 starts) and tallied five goals. He was named the Rookie of the Year by the Asociación del Fútbol Argentino in 2000, and also played in Copa Libertadores in 2001 and Copa Mercosur in 2002.
1999-2000: While with Velez Sarsfield, Dudar also spent time with the Argentina U-20 National Team.
Signed by D.C. United on January 25, 2012.