He scored 16 goals during 2010–11 season in the North-West V AFG and helped the team to B PFG promotion.
[1] In early 2012, Borisov completed his move to Litex Lovech on a free transfer.
On 2 February, he joined Montana on loan until the end of the season.
[2] Borisov made his A PFG debut on 3 March, in a 3–2 away win over Kaliakra Kavarna, coming off the bench to score Montana's third goal.
[3] Borisov played for Sozopol for one season but was released in June 2017.