Marietta is a founder and club director of Red Rock Volleyball Club and Kai Beach Volleyball Club. Marietta oversees all Red Rock locations and is looking forward to delivering a first-class club program in the Tri-Valley/Lamorinda/Walnut Creek area that develops players to reach their full potential.

Marietta has been coaching and providing college recruiting assistance for 14 years and many of the players that she coached have gone to compete at the collegiate level including: USC, Harvard, Columbia, Dartmouth, Yale, Brown, UCLA, UC Santa Barbara, UC San Diego, UC Davis, Duke, Santa Clara, Notre Dame, San Diego St., LMU, Claremont McKenna, Michigan St., Fordham, Middlebury, Carnegie Mellon, Holy Cross, Colgate, and many others.

This past season, Marietta coached the 14-1 team in the TriValley and finished top 5 in Northern California and qualified for the Girls' Junior National Championship in the National division in Chicago, a remarkable accomplishment in only the second year in the TriValley. In the inaugural season for TriValley, she coached the 14-1 team that finished in gold (top 12) in the Northern California region. As a head coach in Redwood City for 10+ years where Red Rock was first established, Marietta qualified all her teams (14s-18s) for Junior Nationals in the Open or National division. In past seasons, Marietta head coached the Red Rock 18-1 team that finished 1st in the Northern California region and had a terrific finish taking home the bronze medal at Junior Nationals. In the previous 2 seasons, she coached Red Rock 18-1 and both squads made very successful runs at Jr. Nationals with wins over the eventual gold medal winners and finishing 11th overall in the 18 open division. Some of Marietta's other past successes as a head coach include: multiple Open medal finishes at Triple Crown NIT, Far Western’s Qualifier, and Pacific Northwest Qualifier, winning the NCVA Regional Championship, top 3 finishes in the Northern California region each year, and a 5th place finish at Junior Nationals.

Marietta previously led the varsity program at St. Ignatius College Prep with her husband David from 2016-2018, taking over the program in 2016 finishing 3rd in State in the Open division and a 27th National Ranking with a team that in the previous year in 2015 was ranked 447th in the country.

Marietta was born and raised in Louisville, KY and New Albany, IN and the daughter of former professional basketball player, Mike Flynn. She won the Gold Medal at the 2000 USA Volleyball Junior Olympics playing for Kentucky Indiana Volleyball Academy (KIVA). She attended New Albany High School and was a four-year varsity volleyball player on her top 50 nationally-ranked team as an outside hitter. She led her team to a 28-3 record her senior year earning MVP in her league. In her graduating class of 700 students, she received the Overall Top Female Athlete Award and the Top Scholar-Athlete Award. 

Marietta took a leap of faith after graduating high school and drove across the country to California, supporting herself financially at Santa Clara University while also being a student-athlete. She graduated Magna Cum Laude with a Bachelor of Science in Accounting and Finance and played libero during her collegiate career. She is now a finance leader in the biotech industry, a Certified Public Accountant, an entrepreneur and small business owner of Red Rock VBC, a volleyball coach, a loving wife, and the toughest job of all…a Mother. “Players often tell me they want to follow in my footsteps and to see them progress over the years on the court, in the classroom, in their professional careers, and in their personal life is the most rewarding aspect of my career. I want to continue to serve as an inspiration to all student-athletes.”

In her spare time, she enjoys spending time with her family, showering her two cats with endless love, and watching sports - Go Warriors!