 On 26 July 1990, the Dallas Sidekicks drafted Isaacs in the first round (seventh overall) of the Major Indoor Soccer League draft.However, a month earlier, on 26 June 1990, the San Francisco Bay Blackhawks of the American Professional Soccer League (APSL) had signed Isaacs to a two-year contract.He remained with the team through the 1993 season, after which the team folded.