Roland Baas

FC Groningen

He made his professional debut in the Eredivisie for FC Groningen on 5 October 2014 in a game against Feyenoord. He did not appear for them in the 2016–17 season either, but did appear 26 times for Jong FC Groningen, scoring once.

Heracles Almelo

On 15 August 2017, Baas joined Heracles Almelo on trial, before signing a one-year contract with the club later that month. He made his debut for the club on 25 October 2017 against HSV Hoek in the KNVB Cup, before making his league debut for the club on 9 December 2017 in a 5–0 league defeat at AZ Alkmaar. He made 14 appearances in the Eredivisie for Heracles Almelo during the 2017–18 season, though he did not score. He made his debut for the club on 17 August 2018 in a 5–0 win at home to Jong FC Utrecht. He was a regular player for Go Ahead Eagles during the 2018–19 season, making 37 appearances and scoring once during the regular season, before making 4 appearances in the promotion play-offs as Go Ahead Eagles narrowly missed out on promotion. He made his debut for the club on 9 August 2019 before going on to make 11 appearances for the club during the 2019–20 season.

International career

He has played for the Netherlands at under-19 and under-20 levels.