He went on to score another 10 goals in the following 2012 Meistriliiga season and becoming an integral part of the first team as Flora finished in third place.

[3] He captained the club to their first-ever trophy, as Paide Linnameeskond lifted the Estonian Cup in the 2021–22 season.

On 21 September 2024, Frolov made his 518th Meistriliiga appearance during Paide's 4–3 victory against Kuressaare, and became the most capped player in the Estonian top flight.

[5] Frolov made his international debut for Estonia on 8 November 2012 against Oman, coming off the bench during the 74th minute as a substitute for Ats Purje.

[6] On the 88th minute he delivered a corner kick which took a deflection off Taavi Rähn before being headed into the net by Flora teammate Gert Kams.