In 2018, Dalaloyan became all-around World Champion. He became the first Russian to achieve that feat since 1999 (when Nikolai Kryukov won in that discipline). He earned 87.598 total points, as did Xiao Ruoteng, though after tie-breaking rules were enforced (which drop the lowest exercise score), Dalaloyan was named All-Around Champion. In event finals, Dalaloyan then won gold on floor exercise, silver on vault, and bronze on parallel bars. He was also awarded the Longines Prize for Elegance.