[3] At the start of the 2015–16 season, Kerchev was promoted to the club's reserve team in the B Group, the second level of Bulgarian football.

After spending August and the early part of September playing with Ludogorets II, Kerchev was called up to the senior team by manager Eduard Eranosyan.

He made his debut in the A Group on 19 September, playing full 90 minutes in the centre of defence against Botev Plovdiv.

[5] On 13 June 2018, Kerchev's contract was extended and he was sent on a season-long loan to Botev Vratsa.

[6] After 3 seasons for Botev in total, Kerchev joined Slavia Sofia on 14 June 2021.