Alexandar Lazarov

In 2016 Lazarov made his debut at ATP level at the ATP Sofia Open. He received a wild card for the qualification of the event in his homeland, losing in two sets to the world No. 214 Marius Copil.[6] A month later Alexandar made his debut for the Bulgaria Davis Cup team against Turkey,[7] losing the first match to Marsel İlhan, but claiming his maiden win over Altuğ Çelikbilek in the second. In September he won his first ITF singles title at the Serbia F8 event in Sokobanja, defeating Filip Veger in the final.

Lazarov lost in the first qualifying round at the ATP Sofia Open in 2017 and 2018, but at the 2019 event the Bulgarian defeated Lukáš Lacko and Luca Vanni to guarantee himself a spot in the main draw for the first time. In his ATP tour main draw debut Alexandar faced former world No. 7 Fernando Verdasco, but failed to score another upset, losing to the Spaniard 2–6 1–6. After the tournament Lazarov made his Top 500 debut in the ATP rankings.

Alexandar won his second ITF singles title in 2018 at the Georgia F3 event in Telavi and a year later he added another trophy to his collection, defeating Jordan Correia in the final of the M15 event in Casablanca.

In January 2020, Lazarov participated in the Bulgarian team in the inaugural 2020 ATP Cup where the top 24 countries qualified based on the singles ATP ranking of their No. 1 country player. The Bulgarian team was No. 19 based on Dimitrov’s ranking and part of Group C. Lazarov and Grigor Dimitrov pulled a victory in doubles where as the underdogs they stunned the top British experienced pair of Jamie Murray/Joe Salisbury in a close three sets match.[8][9][10]

At the beginning of the 2021 season Lazarov made the qualifying draw at the Antalya Open, but lost in three sets to Lucas Miedler. In July Alexander played his first ATP Challenger main draw match at the Iași Open after two wins in the qualification draw, but his run was stopped by Marius Copil. The Bulgarian's good form continued in the following week at the M25 event in Telavi, where he didn't lose a set on his way to his fourth ITF singles title.

In September, he received a wild card for the main draw at the ATP Sofia Open, but couldn't score his maiden ATP win, losing 0–6 3–6 to Filip Krajinović. Lazarov finished his season with two consecutive ATP Challenger quarterfinals in 2021 Bahrain Ministry of Interior Tennis Challenger and 2021 Antalya Challenger IV and reached a new career-high ranking of No. 405 on 13 December.

Alexandar Lazarov debuted for the Bulgaria Davis Cup team in 2016. Since then he has 7 nominations with 8 ties played, his singles W/L record is 4–3 and doubles W/L record is 3–4 (7–7 overall).

• indicates the result of the Davis Cup match followed by the score, date, place of event, the zonal classification and its phase, and the court surface.

Rubber result	No.	Rubber	Match type (partner if any)	Opponent nation	Opponent player(s)	Score
2–3; 4–6 March 2016; Ankara Tenis Kulübü, Ankara, Turkey; Group II Europe/Africa First Round; Hard (i) surface
Defeat	1	II	Singles	Turkey	Marsel İlhan	4–6, 2–6, 3–6
Victory	2	V	Singles		Altuğ Çelikbilek	4–6, 6–4, 6–4
2–3; 15–17 July 2016; Tennis Courts of Cité Nationale Sportive, Tunis, Tunisia; Group II Europe/Africa Relegation Play-Off; Hard surface
Defeat	3	II	Singles	Tunisia	Malek Jaziri	4–6, 4–6, 1–6
Defeat	4	III	Doubles (with Vasko Mladenov)		Malek Jaziri / Skander Mansouri	4–6, 4–6, 3–6
Victory	5	V	Singles		Aziz Dougaz	4–6, 6–4, 7–6(7–1)
3–0; 6 April 2017; Holiday Village Santa Marina, Sozopol, Bulgaria; Group III Europe Round Robin; Hard surface
Victory	6	III	Doubles (with Tihomir Grozdanov)	Armenia	Mikayel Khachatryan / Sedrak Khachatryan	6–2, 6–1
3–0; 7 April 2017; Holiday Village Santa Marina, Sozopol, Bulgaria; Group III Europe Round Robin; Hard surface
Victory	7	III	Doubles (with Tihomir Grozdanov)	Greece	Petros Tsitsipas / Stamatios Kapiris	6–0, 6–4
1–4; 13–14 September 2019; Kelvin Grove Club, Cape Town, South Africa; Group II Europe/Africa First Round; Hard surface
Defeat	8	I	Singles	South Africa	Lloyd Harris	4–6, 7–6(7–3), 3–6
Defeat	9	III	Doubles (with Alexander Donski)		Raven Klaasen / Ruan Roelofse	3–6, 2–6
4–1; 6–7 March 2020; Costa Rica Country Club, San José, Costa Rica; World Group II Play-Off; Hard surface
Victory	10	II	Singles	Costa Rica	Jesse Flores	7–5, 4–6, 6–3
Defeat	11	III	Doubles (with Adrian Andreev)		Jesse Flores / Pablo Núñez	6–7(9–11), 6–4, 6–7(10–12)
1–3; 5–6 March 2021; Sport Hall Sofia, Sofia, Bulgaria; World Group II; Hard (i)surface
Defeat	12	III	Doubles (with Gabriel Donev)	Mexico	Hans Hach Verdugo / Miguel Ángel Reyes-Varela	4–6, 4–6
3–1; 4–5 March 2022; Sport Hall Sofia, Sofia, Bulgaria; World Group II Play-Off; Hard (i) surface
Victory	13	II	Singles	Paraguay	Daniel Vallejo	6–4, 6–1
Victory	14	III	Doubles (with Alexander Donski)		Juan Borba / Hernando José Escurra Isnardi	6–3, 7–5