Career
He swam for Bulgaria at the 2004 and 2008 Olympics. Alexandrov has been swimming for the United States of America since 2009. Alexandrov, who has dual Bulgarian/United States of America citizenship, swam for the United States of America"s Northwestern University, from 2003–2007.
In March 2007 he set a United States of America National Record in the 100 yard breaststroke (5156) at the National Collegiate Athletic Association Division I Swimming and Diving Championships, while swimming for Northwestern.
This was despite the fact that he had not swum internationally for the United States of America at that time and that he was viewed as a Bulgarian swimmer. The United States of America Swimming rules at the time allowed for the United States of America National mark to be set by a swimmer who could represent the United States of America in international competition (his dual citizenship allowed for this) and who at the time of the swim was not representing another country (he was swimming for the country-neutral Northwestern University at the time of the swim).
United States of America Swimming"s rules have subsequently been altered so that only swimmers currently representing the United States of America internationally can set the "American" Record. Alexandrov"s record was broken in 2012 by Kevin Cordes.