In 2023, Lucas was upgraded to the Knights' top 30 NRL squad on a contract until the end of 2023.[6] In round 3 of the 2022 NRL season, he made his first grade debut for Newcastle against the Dolphins.[7]
2024
Lucas played 21 games for Newcastle in the 2024 NRL season as the club finished 8th and qualified for the finals. They were eliminated in the first week of the finals by North Queensland.[8]