He is best known as founder and owner of Las Vegas Sports Consultants (1982–1999), the international odds making company licensed by the Nevada Gaming Control Board.

Roxborough is credited with introducing mathematical formulas and computer models to the multi-billion dollar sports wagering industry.

[1][2][3][4][5] Roxborough was a co-founder of American Wagering Inc, the first U.S. bookmaking company to be listed on a public stock exchange in 1996 (Nasdaq: BETM).

[7] Roxborough and Mike Rhoden co-authored “Sports Book Management: A Guide to the Legal Bookmaker”, originally published in 1988 and updated in 1991 and 1998 (OCLC 40281354).

Roxborough was a partner in the 1997 Sprint Champion and Eclipse Award winning thoroughbred race horse Smoke Glacken.