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Bios of coaches



Coach John Emme just finished his 19th season as the head coach at Corona del Mar High School. He has a career record of 295-215. The Sea Kings made it to the playoffs in fifteen of the nineteen seasons of Emme's tenure. Highlights include five league championships, a 2009 trip to the semi-finals as well as the 1999 and 2004 C.I.F. Division IV Championship.  In 1999, CDM. won the title in a thrilling 9-8 come from behind victory against El Segundo in front of 4,000 fans at Edison International Field. The Sea Kings finished the year ranked #1 in the state Division III and were named “Team of the Year” for the State of California Division III by Cal Hi Sports. Coach Emme was named Daily Pilot “Coach of the Year”, C.I.F. Division IV “Coach of the Year”, as well as Cal Hi Sports State “Coach of the Year” for medium-sized schools.

Coach Emme was born and raised in Glendale and was a 1982 graduate of St. Francis High School. He was a three year Varsity letterman in baseball and was All-League/All-Area pitcher his senior year. He was also named the Glendale Connie Mack League Most Valuable Player in 1982. He was the first member of the class of 1982 to be inducted into the St. Francis High School Sports Hall of Fame. He earned his B.A. and teaching credential at U.C. Davis where he was a three year Varsity letterman on the two-time Northern Coast Athletic Conference Champion baseball team. His 1985 U.C. Davis team was named “Team of the Decade” and placed in the U.C. Davis Baseball Hall of Fame.

John began his coaching career at U.C. Davis where he was an assistant coach for the 1986-1987 season. The following year he was named the head coach at Underwood High School in Underwood, Iowa. He coached there for three seasons and his final year he was named the Southwest Iowa Conference “Coach of the Year”.

From 1992-1997, he was an assistant coach at Redondo Union High School in Redondo Beach, CA. During those years, the Seahawks reached the C.I.F. quarterfinals four times. The highlight was the 1996 season where Redondo finished 28-2 and was ranked 12th in the state in the final poll.

John currently teaches English, Sociology, and Psychology at CDM and has his Master’s degree in Education from Cal. State San Bernardino. He lives in Newport Beach.

Coach Tom Gentile

Coach Gentile enters his 39th year coaching baseball.

Before arriving at CDM 4 years ago Coach Gentile coached for 6 years at Edison High School in Huntington Beach. In his first year at CDM Coach Gentile guided the JV team to a 22-4 record, a Garden Grove Tournament Championship and a P.C.L. Title.  In 2015 Coach Gentile was invited to coach Varsity and work with the hitters and infielders. In 2015 and 2016 the team was league runner-up and made the C.I.F. Playoffs. 

"We have a very special group this year and I believe we can take the next step and win a league title and make a deep run in the playoffs. The past 4 years have been a great experience. The coaching staff, parents and players have been so supportive and a pleasure to be around. Things are done right here and I hope to be here a long, long time!"

Coach is a local Realtor and business owner and resides in Huntington Beach with his wife, Donna. Coach also has two boys David and Ryan who both reside in Huntington Beach along with two special grand-daughters Taylor and Jordyn. Coach graduated from Long Beach City College with an Associate Degree.


Coach Jon Green

This is Coach Green’s 10th year as an assistant varsity coach for CDM and his 16th year coaching at the varsity level. As an Orange County native, Coach Green played shortstop at Dana Hill High School alongside three MLB draft picks. As a senior in 1995, he played every inning of the season at SS.  During college, while studying Political Science, he was a 4-year letterman in baseball at George Washington University and he played for the 1998 regular season Atlantic-10 conference champion. He reached base safely nine at-bats in a row his senior year, and never struck out during his entire college career. He played in two major league stadiums, Jacobs Field, Cleveland, (where he stole a base) and Veterans Stadium, Philadelphia.

Coach Green began his coaching career at Newport Harbor as a varsity assistant in 2000. Then he became a varsity assistant coach at Laguna Hills from '01-'02 during back to back Sea View League titles. From 2003-2005, he was the Head Varsity Coach at Estancia.

Coach Green resides in Ladera Ranch with his wife Shelly and their daughter Amelia.

Coach Garrett Green

This will be Coach Garett Green's third year with the Corona Del Mar baseball team.  Born and raised in Orange County Coach "GG" went to Canyon High School where he was a three time First Team All League choice, and an All CIF choice his Senior year.  Out of High School he went to local Cypress Community College where he became a First Team All American his Sophmore year, where he received a scholarship and took his talent to San Diego State University.  At SDSU he learned from one of the best hitters to ever step in a batter's box, Hall of Famer Tony Gwynn.  Coach GG started right away for the Aztecs and became the team's best hitter by years end.  After two years with SDSU Coach GG was drafted by the Los Angeles Dodgers, where he played two seasons in their minor league organization before retiring from the game.

"I am very excited to start the next chapter in my baseball career, and I want to thank Coach Emme for giving me this opportunity to join the CDM Baseball Family." 

Coach GG resides in Newport Beach with his wife Ashley.  He is a local Real Estate Agent for a Real Estate Investment company that specializes in Buying / Selling / and Hotel Investments. 


Coach Paul Possemato

Coach “Poss” is in his second year with the CDM baseball program. He has been coaching baseball for a very long time.  Coach is originally from Arcadia, CA where he played football and baseball as an Apache.  He later coached baseball at his alma mater, then managed and operated the American Legion baseball program for Arcadia Post 247, The Doughboys, for many years in the 1980’s and 90’s.  As his children grew into ballplayers themselves he went on to coach Sr. Babe Ruth baseball in Arcadia and then became the varsity softball coach at Mayfield Senior School in Pasadena where his daughters attended high school.

Coach was a pitcher at Orange Coast College in the mid 1970’s and then went on to USC where he had the opportunity to play for the late, great, legendary Trojan baseball Coach Rod Dedeaux before being cut in his Junior season.  Though he did not play varsity baseball at USC, his would be teammates and friends, went on to win the NCAA National Championship his senior year in 1978.

Coach moved to the Newport Beach area in 2003 after living in Arcadia and Pasadena his entire life where he and his wife Susie raised their three adult children.  Paul and Susie have now been blessed with seven, number eight on the way, terrific grandchildren.  Like Coach Poss, “Grampy,” they are all devoted Los Angeles Dodgers fans.

Coach looks forward to the upcoming season with abounding enthusiasm and will do his best to set a fine example for the terrific young men of Corona del Mar High School this season.

Coach Javier Rosales

Coach Javier Rosales is in his first year as an assistant J.V. coach for the Sea Kings. Born and raised in Santa Ana, California. Coach Javier attended Segerstrom High School where he was able to prosper as a scholar athlete.  He was a three year Varsity letterman in baseball and was All-league his junior and senior year. As a senior Coach Javier’s batting average was .425 and was selected to play in the Orange County Senior Showcase. Coach Javier would love to help the young men on his team win a league championship as well as develop their baseball skills. He lives in Santa Ana with his parents, and will be playing baseball at Orange Coast College next Spring.  Coach Javier is working to achieve his goals of playing Major League Baseball. He would like to thank John Emme for being a class act, and for the opportunity to join the Sea King family.


Coach Miller

Coach Miller was born and raised in Altadena, CA on four sports- football, baseball, basketball and tennis. He attended John Muir High School where his teachers and coaches influenced him to become a teacher and coach. After 12th grade, he attended UC Berkeley and UCLA earning letters in both football and baseball, before continuing on to begin a career in professional baseball with the Chicago Cubs organization. He has enjoyed coaching at Pasadena City College, American legion Baseball, and 30 years at Santa Ana High School. Coach Miller is currently residing on Balboa Island enjoying a 56 year marriage to wife Patti, three of his own children, and six grandchildren. He would like to thank John Emme for this opportunity to join the Sea King family and his brother Ed for teaching him the value of fundamentals in sports.  

Coach James Corbett

Coach Corbett is in his third season with Sea Kings Baseball. He graduated Irvine High School in 2001 where he played four years of football and was a member of the 2000 CIF-SS Div. VI undefeated Championship team. He earned his Bachelor of Arts in English Education and teaching credential from California State University, Long Beach. He currently teaches 9th and 10th grade English/Language-Arts here at Corona del Mar High School. Born and raised in Orange County, Coach Corbett currently lives in Costa Mesa.