2001 Reorganisation
In 2001 the most recent change in format took place. Section 1 was reduced to eight teams, and was renamed as the Premier League. Section 2 remained with twelve teams and was renamed as Senior 1. The Intermediate League was renamed as Senior 2, with all remaining teams placed in this section.
The top three teams in the Premier League at the end of the season qualify for the All-Ireland Club Championship.
Read more about this topic: Ulster Senior League (men's Hockey)