Momirovski playing in the halves in the Sydney Roosters’ 2016 Holden Cup premiership winning team.

Momirovski played in the Roosters' Preliminary Final win against the South Sydney Rabbitohs, scoring a try.

Momirovski subsequently missed his conversion attempt after the full time siren had sounded and Canterbury held on to win the match.

[5] In round 24 against the St George-Illawarra Dragons, Momirovski kicked all seven of his attempts at goal and scored three tries in the 42–14 win at the Sydney Cricket Ground.

[6] On 30 September, Momirovski earned his first representative jersey as he was named at centre in Prime Minister's XIII During the lead up to the 2020 NRL season, the Tigers and Melbourne Storm attempted to arrange a temporary player swap between Momirovski and Storm player Harry Grant.

[8] There were further delays due to injury to Brandon Smith causing Melbourne to hold up proceedings so they could have Grant provide back up to Cameron Smith in the early rounds of the season,[9] and briefly by Momirovski wishing to sign a new contract with Wests Tigers prior to leaving,[10] but the deal was finally made official during round 2 of the season, coinciding with the announcement that Momirovski had signed a contract with Wests Tigers for the 2021, and 2022 seasons.

On 7 February 2021, Momorovski signed with the Penrith Panthers in a swap deal which allowed Daine Laurie to join the Wests Tigers a year early.

[18] Momirovski was limited to only three matches for the Sydney Roosters in the 2023 NRL season as the club finished 7th on the table and qualified for the finals.