In Buenos Aires, he reached his first final of his career, where Argentine Juan Mónaco defeated him 6–1, 6–2; on February 26, 2007.
Buenos Aires | ATP International Series | 2011 ATP Challenger Tour | 2012 ATP Challenger Tour | 2013 ATP Challenger Tour | ATP International Series Gold | ATP World Tour 250 series | ATP | Buenos Aires Province | ATP World Tour 250 Series | 2013 ATP World Tour | 2012 ATP World Tour | 2001 ATP Tour | 2011 ATP World Tour | ATP World Tour 500 series | University of Buenos Aires | 2010 ATP World Tour | 2003 ATP Tour | ATP World Tour Masters 1000 | 1996 ATP Tour | 2002 ATP Tour | 2006 ATP Tour | Greater Buenos Aires | 2004 ATP Tour | 1990 ATP Tour | Roman Catholic Archdiocese of Buenos Aires | 2000 ATP Tour | 1998 ATP Tour | 1997 ATP Tour | 2007 ATP Tour |
Other major championships that Lundquist won was The British Hard Court Championships in 1965 and 1967, The Pacific Coast Championships (nowadays the SAP Open) in 1962, The South American Outdoor Championships (nowadays the ATP Buenos Aires) in 1962 and The Swedish Open in 1963.
2007 ATP Buenos Aires – Singles was the singles event at the 2007 ATP Buenos Aires tennis tournament.