In the week prior to the Riviera 's close , the APA held their Annual League Operator 's Convention as well as their 2015 National Singles Championship .
APA held annual events at the Riviera for 23 years up until its closure .
In the week prior to the Riviera 's close , the APA held APA 's Annual League Operator 's Convention as well as their 2015 National Singles Championship .
APA held annual events at the Riviera for 23 years up until its closure .