The 1987 National Basketball League Finals started on 30 September and concluded on 16 October. The playoffs consisted of two best of three Semi-finals and the best of three game Grand Final series.
Updated to match(es) played on 20 September 1987. Source: NBL.com.au
The NBL tie-breaker system as outlined in the NBL Rules and Regulations states that in the case of an identical win–loss record, the results in games played between the teams will determine order of seeding.