One of the Nation’s Most Experienced Staffs
Head Coach Phil Mumma
Phil Mumma leads the Sorcerer Softball organization. A veteran of more than 40 years of softball playing and coaching experience, Mumma has coached at the collegiate, club and high school levels, producing numerous championship teams along the way. He has served as head coach of Chabot College, San Ramon Valley High School and Acalanes High School, and was an assistant at Campolindo and Miramonte high schools.
In 2001 he was honored as CIF North Coast Section Honor Coach, one of only 22 coaches throughout the section’s history to receive the recognition. Honor coaches are selected for coaching accomplishments and for service to the sport of softball. 
In 2001 Mumma founded Sorcerer Softball and quickly led the club to regional and national preeminence. His Sorcerer teams captured the 2002 and 2003 ASA 18U National Championships, the Bay Area’s first national titles in the age group. Sorcerer was
also the first team to win back-to-back titles in the 18s in decades.
The team began competing at the 18 Gold level in 2004 and has qualified for Gold Nationals every year since. Former Sorcerers have
been named to high school All-American teams, the USA Junior National Team, collegiate all-conference teams,
collegiate regional squads, and NFCA All-American teams.
In the 2007-2008 college season, 33 former players competed at the Division I level.
Mumma, along with former men’s Major Division pitcher Delmar Himango, opened Sorcerer Softball Academy, a hitting,
pitching and position play instructional facility which was located for a decade in San Ramon, before moving to Concord in January.
In 2004, Mumma was selected by ASA to assemble and coach a regional all-star team to compete against the U.S. Olympic team as they prepared to win the Gold Medal in Athens. In addition to coaching and operating Sorcerer Softball Academy, Mumma is called on to give clinics to coaches and players throughout Northern California.
Coach John Rebstock
John Rebstock brings decades of fastpitch playing and coaching experience to the Sorcerer Gold program. 
John pitched for parts of five decades and his legendary 88-m.p.h. drop was a force in five ASA men’s major division world championship tournaments.
Rebstock was a long-time high school coach at Antioch, Deer Valley and Heritage High Schools. His teams were known by rival coaches as among the best prepared in California softball and three of John’s Antioch Panther squads won North Coast Section championships.
His 2007 Heritage Patriot team accomplished something never seen before in NCS history, winning the Section 2A championship in the school’s first year of varsity competition. For that John was named California Coach of the Year.
John has had ASA nationals coaching experience with the former Contra Costa Cobra 16s and Sorcerer Gold programs.
Coach Kim Fabian
As a player herself, Coach Fabian started her career at Pioneer High School in San Jose, California where she was selected MVP and All-League catcher.
Later she entered West Valley College and was selected All Conference and all NorCal third baseman.
As a player at Oklahoma State, Kim placed fifth during her junior year at the Association of Intercollegiate Athletics for Women (AIAW) College World Series.
In her senior year, she led her team in the championship game of the final AIAW college world series in Oklahoma. Then two days later, Kim competed in the first NCAA Women’s College World Series in Omaha , NE. 
Kim was an AIAW and NCAA All-American in 1982. In Womens A major fastpitch, Kim led her team to win the 1983 Womens A nationals in Hayward, CA and was named an ASA All-American.
In 1984, Kim participated in ASA Womens AAA Nationals in Buffalo, NY.
In total, Kim competed in three college world series events, two ASA Nationals in three years, and was named an All-American three times. Her college career, which included playing in the initial two Women’s College World Series, was culminated by her selection as a first team All-American catcher while starring for Oklahoma State University.
For 12 seasons she served as assistant coach at West Valley College and served as head coach of the
California Sharks and San Jose Sting Gold programs, helping hone the talents of players such as USA Olympic infielder Vicky Galindo and 2007 collegiate national player of the year runner-up Samantha Ricketts.
Coach Reny Sunga
Reny Sunga has accumulated a wealth of ASA and high school coaching experience. Sunga has 
coached at the club level for the Shockers and the Contra Costa Cobras. He has nationals coaching experience with the Cobra 14A and 16A teams, as well as with the 2004 and 2007 Sorcerer 18 Gold squad.
For three years he served as an assistant at Deer Valley High School before assisting Rebstock during Heritage High’s 2007 NCS title run. He returned to Deer Valley for the 2008 campaign.
Reny is a long time assistant coach. He works well with outfielders and energizes players with his positive style.
