However, he did not make any senior appearances for the club who competed in Vtora liga at the time.
In 2017, Petkov joined Bdin Vidin for the winter and his good form earned him a move to CSKA 1948 in January 2018, where he failed to record any official appearances for the first team.
[1] During the 2018–19 season, Petkov was loaned to Strumska Slava, where he made 14 appearances for the Radomir team.
Over the next six seasons, Petkov established himself as a first-choice goalkeeper for the club, making 159 league appearances between 2019 and 2025.
His consistent displays and reliability in goal contributed significantly to the team's performances during this period.