Mr. Mathews grew up in Las Vegas and has roots in Southern Nevada that go back generations. Preston served as a judicial law clerk for the Honorable Judge James E. Wilson, Junior in the First Judicial District Court of Nevada. Preston also served as a judicial extern for the Honorable Judge Roger L. Hunt in the United States District Court for the District of Nevada and for the Honorable Justice Michael A. Cherry in the Supreme Court of Nevada. In addition, Preston interned with national grocery chain Winn-Dixie Stores' corporate in-house counsel department.
Preston formerly served on the board of directors for the South County Management Society in Orange County, California. He served as president of the student chapter of the J. Reuben Clark Law Society at Florida Coastal School of Law.