He played at Canada Junior College in Redwood City, CA where he was a member of a State Championship team and was voted the teams most inspirational player. He was an All-Golden Gate League conference selection in a season in which he defeated Brad Gilbert (former #4 in the world) twice in doubles. Marsh earned a Full Scholarship to the University of California Santa Barbara where he was the #3 Singles Player and #1 Doubles player and won the PCAA Doubles Championship and was a finalist at Ojai.

As a coach Marsh has achieved regional and national acclaim for excellence in teaching, programming and tournament management from both the United States Tennis Association (USTA) and the United States Professional Tennis Association (USPTA). Private organizations such as Nike, the Tennis Industry Association (TIA), and the Portland Trailblazers have recognized Marsh for contributions to the game of tennis. Entrepreneurial proposals written by Marsh accepted and built exceed $3 million dollars.

As a USTA Clinician, Marsh conducted over 30 school tennis assemblies throughout the country as well as numerous P.E Units. He served the USTA as a local tennis coordinator with specific outreach programs including work with Native American populations. As a sectional presenter for USPTA, he made multiple presentations at conventions. Through partnership with Boys and Girls clubs and YMCA's he developed programs that introduced hundreds of children to the sport of tennis. Mr. Riggs was asked to serve on the USPTA board of directors and was chair of outreach programs. He has coached several high school tennis teams and taught college for-credit tennis classes for Linn Benton Community College and Klamath Community College. Marsh makes the game easy to learn and so much fun for everyone.