Career
Antonov had previously played for Minyor Bobov dol and Montana. Sportist Svoge
In summer 2008, he signed with Sportist Svoge. In the 2008-2009 season,Antonov helped the team with his goals gain promotion to the first division in Bulgaria.
He scored 15 goals in 29 matches.
In the first half of the next season he earned 15 appearances playing in the A PFG, scoring five goals. Levski Sofia
On 4 January 2010, Levski Sofia signed Antonov on a three-year deal for € 50 000.
He chose to wear the kit number 19. Antonov made his official debut for Levski on 7 March 2010 against Minyor Pernik.
The result of the match was 3–1 for Levski.
= Montana (loan) On 13 July 2010, Antonov was sent on loan to his former club PFC Montana. On January 15, 2014 moved to Maccabi Yavne from the Israeli National League. A tall and physically imposing forward with a good heading ability, Antonov has been likened to Georgi Chilikov.