Marsh attended Pepperdine University and graduated in 1996 with a degree in Business Administration. He was a Third Team All-American golfer in 1994 and notched four Division 1 College Tournament wins.
Marsh went on to play three years of professional golf but reinstated his amateur status in 2002. He won the 2005 USGA Mid-Amateur Championship in 2005, qualifying him for the 2006 Masters. Marsh was named the 2008 SCGA “Player of the Year” after winning the SCGA Amateur Championship that year – he also won it in 1996.
The 2004 and 2005 Santa Barbara City Champion, Marsh also won the Stocker Cup in Carmel Valley, the Carlton Woods Invitational in Houston and the Champions Cup in Houston all in 2009. Marsh teamed up with George Downing of Santa Barbara to win both the 2008 and 2009 SCGA Fourball Championship.
A real estate developer, Marsh lives in Henderson, Nev., with his wife, Yanira, and son, Brian.