On 20 March 2010, in a 2–0 away win over Wuppertaler SV Borussia Aleksandrov assisted Marcel Großkreutz for the second goal.

[6] He made his debut for Akademik in their match against Sliven 2000 on 21 August, coming on as a second-half substitute for Asparuh Vasilev.

[8] On 31 July 2013, Aleksandrov netted the winning goal for Ludogorets in the 2–1 victory over FK Partizan in the first leg of a UEFA Champions League match.

[9] In 2015–16 season Aleksandrov was dropped to the bench, making only four league appearances as a substitute during the first half of the campaign.

[11] On 10 February 2017, Legia announced the transfer of Aleksandrov to Russian Premier League club FC Arsenal Tula.

[13] In the opening game of the 2018–19 season against FC Dynamo Moscow he suffered an ACL tear, even though he didn't even remember the moment of the injury.

[17] In October 2011, Aleksandrov earned his first call-up to the Bulgaria national side for a friendly match against Ukraine and a Euro 2012 qualifier against Wales.