[3] In 1989, he entered San Diego State University where he played one season with the men's soccer team.

In 1992, Adair's senior season, San Diego went to the NCAA championship where they fell to the Virginia Cavaliers.

On April 7, 1993, the San Diego Sockers selected Adair in the first round of the 1993 Continental Indoor Soccer League Draft.

[4] After scoring ten goals in six games, Adair left the Sockers for a trial with Belgium club Ghent the first week of July.

After going on a post-season tour of Switzerland with the Sockers, Adair signed with the Wichita Wings of the National Professional Soccer League in January 1994.

[10] In March 1996, the Los Angeles Galaxy selected Adair in the third round (26th overall) of the 1996 MLS Supplemental Draft.

Adair was associate head coach of the UC Santa Barbara women's team for two seasons.

In March 2021, Adair was sued by a former player, Kiersten Hening, for allegedly benching her, subjecting her to repeated verbal abuse, and forcing her off the team because she refused to kneel in support of the Black Lives Matter organization.