Career
On 28 September 2015, he reached his highest Association of Tennis Professionals singles ranking of 281 whilst his best doubles ranking was 459 on 28 September 2015. 2015 In 2015 Kuzmanov played on the International Tennis Federation circuit and reached 7 International Tennis Federation Futures finals, winning 5 titles. On 28 September 2015 he reached his highest Association of Tennis Professionals singles ranking of 285.
2016 Kurmanov received a wild card for the Association of Tennis Professionals World Tour 250 tournament Sofia Open and made his Association of Tennis Professionals main draw debut, losing in three sets to the world #96 Ričardas Berankis.
Kurmanov is the son of former bulgarian tennis player Dora Rangelova. Singles: 15 (11–4) Doubles: 9 (5–4) Since then he has a 9–2 singles record and a 0–2 doubles record (9–4 overall).
Singles (9–2) Doubles (0–2) RPO = Relegation Play–off PPO = Promotion Play–off ready reckoner = Round Robin.