[1] On March 8, 2014, Lazarević made his professional debut for Crvena zvezda in the ABA League win over Krka, making 1 steal in under 2 minutes of playing time.

[4] On October 13, 2017, he made his EuroLeague debut against Žalgiris, making his only two-point attempt in under 5 minutes of playing time.

[6] On February 17, 2018, Lazarević injured left knee during the Radivoj Korać Cup Semifinal game.

Lazarević was a member of the Serbian under-16 team that won the bronze medal at the 2012 FIBA Europe Under-16 Championship in Latvia and Lithuania.

[12] He was a member of the Serbian under-18 team that won the silver medal at the 2014 FIBA Europe Under-18 Championship in Konya, Turkey.